AS FILED WITH THE SECURITIES AND EXCHANGE COMMISSION ON APRIL 22, 2002
                                                  REGISTRATION NO. 333-86242
 ------------------------------------------------------------------------------

                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549

                             ----------------------

                                 AMENDMENT NO.1
                                       TO
                                    FORM S-4
             REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933

                             ----------------------

                               MARKEL CORPORATION
             (Exact name of registrant as specified in its charter)



         VIRGINIA                            6331                   541359284
(State of other jurisdiction of  (Primary Standard Industrial     IRS Employer
incorporation or organization)    Classification Code Number)   Identification
                                                                   Number

                             4521 Highwoods Parkway
                        Glenn Allen, Virginia 23060-6148
                                 (804) 747-0136
                   (Address, including zip code, and telephone
             number, including area code, of registrant's principal
                               executive offices)

                                Gregory B. Nevers
                    Senior Vice President and General Counsel
                             4521 Highwoods Parkway
                        Glenn Allen, Virginia 23060-6148
                                 (804) 747-0136
                (Name, address, including zip code, and telephone
               number, including area code, of agent for service)

                                 WITH COPIES TO:


          Leslie A. Grandis                    Robert H. Craft, Jr.
           McGuireWoods LLP                    Sullivan & Cromwell
          One James Center                 1701 Pennsylvania Ave., NW
     Richmond, Virginia 23219             Washington, D.C.  20006-5805
           (804) 775-1000                       (202) 956-7500

     APPROXIMATE DATE OF COMMENCEMENT OF PROPOSED SALE OF THE SECURITIES TO THE
PUBLIC: As soon as practicable following the effectiveness of this registration
statement.

If the securities being registered on this Form are being offered in connection
with the formation of a holding company and there is compliance with General
Instruction G, check the following box. [_]

If this Form is filed to register additional securities for an offering pursuant
to Rule 462(b) under the Securities Act, check the following box and list the
Securities Act registration statement number of the earlier effective
registration statement for the same offering. [_]

If this Form is a post-effective amendment filed pursuant to Rule 462(d) under
the Securities Act, check the following box and list the Securities Act
registration statement of the earlier effective registration statement for the
same offering. [_]


     THE REGISTRANT HEREBY AMENDS THIS REGISTRATION STATEMENT ON SUCH DATE OR
DATES AS MAY BE NECESSARY TO DELAY ITS EFFECTIVE DATE UNTIL THE REGISTRANT SHALL
FILE A FURTHER AMENDMENT WHICH SPECIFICALLY STATES THAT THIS REGISTRATION
STATEMENT SHALL THEREAFTER BECOME EFFECTIVE IN ACCORDANCE WITH SECTION 8(a) OF
THE SECURITIES ACT OF 1933 OR UNTIL THE REGISTRATION STATEMENT SHALL BECOME
EFFECTIVE ON SUCH DATE AS THE COMMISSION, ACTING PURSUANT TO SAID SECTION 8(a),
MAY DETERMINE



Prospectus and Consent Solicitation Statement

[LOGO] Markel Corporation

U.S. $175,000,000


Exchange offers for all existing notes of Markel International Limited,
formerly Terra Nova Insurance (UK) Holdings plc



Exchanged for new notes of Markel Corporation and solicitation of consents for
amendment of the related indentures


--------------------------------------------------------------------------------



                                                                                                Consent Payment
Aggregate                                                  CUSIP     Description of             per $1,000
Principal Amount Description of Existing Notes             Number    Markel's New Notes         Principal Amount
---------------- ----------------------------------------- --------- -------------------------- ----------------
                                                                                    
  $75,000,000    7.2% Terra Nova Notes due August 15, 2007 88100DAC9 7.2% Markel Notes due 2007      $2.50
  $100,000,000   7.0% Terra Nova Notes due May 15, 2008    88100DAE5 7.0% Markel Notes due 2008      $2.50
  ------------   ----------------------------------------- --------- -------------------------- ----------------




   The consent payment deadline (that is, the time by which you must tender in
   order to be eligible to receive the consent payment) for each exchange offer
   is May 7, 2002, unless extended. Each of the exchange offers expires at 5:00
   p.m., New York City time, on May 20, 2002, unless extended or earlier
   terminated. Tenders may only be withdrawn prior to the consent payment
   deadline.


We are offering to exchange your Terra Nova notes of either series listed above
for new Markel notes having the same principal amount, interest rate,
redemption terms and payment and maturity dates and providing for accrued
interest from the last date for which interest has been paid on those Terra
Nova notes.

If you tender your Terra Nova notes in the exchange offers, you will be deemed
to consent to the amendments to the respective indenture under which those
Terra Nova notes were issued. We describe those amendments in this prospectus
under "The Proposed Amendments." We will not be required to complete either
exchange offer or to make the consent payments relating to that exchange offer
if we do not receive valid consents sufficient to effect the amendments with
respect to both series of notes listed above, although we are free to waive
this or any other condition with respect to either of the exchange offers.


We will pay an amount in cash equal to the applicable consent payment listed
above to each holder of Terra Nova notes accepted for exchange if the holder
has tendered those notes before the consent payment deadline.



If you would like to tender your Terra Nova notes in the exchange offers, you
may do so through DTC's ATOP program or by following the instructions that
appear later in this prospectus and consent solicitation statement and in the
related letter of transmittal and consent. If you tender through ATOP, you do
not need to complete the letter of transmittal and consent.



If you hold your Terra Nova notes through a broker or other nominee, only that
broker or nominee can tender your Terra Nova notes. In that case, you must
instruct your broker or nominee if you want to tender your Terra Nova notes.


We do not intend to list the Markel notes to be issued in the exchange offers
on any national securities exchange or on The Nasdaq Stock Market.


For a discussion of the risks that you should consider in evaluating the
exchange offers and consent solicitations, see "Risk Factors" beginning on page
9.


Neither the Securities and Exchange Commission nor any state securities
commission has approved or disapproved of the securities being offered in the
exchange offers or passed upon the adequacy or accuracy of this prospectus and
consent solicitation statement. Any representation to the contrary is a
criminal offense.


None of Markel, Terra Nova, the exchange agent, the information agent, the
trustee under the Terra Nova indentures, the trustee under the Markel
indentures or the dealer manager makes any recommendation as to whether or not
holders of Terra Nova notes should exchange their securities in the exchange
offers and consent to the proposed amendments to the Terra Nova indentures.



The exclusive dealer manager for the exchange offers and consent solicitations
is:


                                   JPMorgan

April 23, 2002




The exchange offers and consent solicitations are not being made to, nor will
Markel accept, exchanges or consents from, holders of either series of Terra
Nova notes in any jurisdiction in which the exchange offers, the consent
solicitations or the acceptance of outstanding Terra Nova notes of that series
in exchange for the Markel notes would violate the securities or blue sky laws
of that jurisdiction.

You should rely only on the information contained or incorporated by reference
in this prospectus and consent solicitation statement. We have not authorized
any person (including any dealer, salesman or broker) to provide information or
make any representations other than that provided in this prospectus and
consent solicitation statement and, if given or made, that information or
representation must not be relied upon as having been authorized by Markel,
Terra Nova, the dealer manager or any agent or dealer. We are not making an
offer of Markel notes in any state where the offer is not permitted. You should
not assume that the information in this prospectus and consent solicitation
statement is accurate as of any date other than the date on the cover page or
that any information contained in any document we have incorporated by
reference is accurate as of any date other than the date of the document
incorporated by reference.


                               TABLE OF CONTENTS





                                                                             Page
                                                                             ----
                                                                          
Summary.....................................................................   1
Risk Factors................................................................   9
Cautionary Statement Regarding Forward-looking Statements...................  13
Where You Can Find More Information.........................................  15
The Exchange Offers.........................................................  16
Description of Differences Between the Terra Nova Notes and the Markel Notes  27
The Proposed Amendments.....................................................  38
Certain Related Transactions................................................  41
Descriptions of the Markel Notes............................................  42
Material U.S. Federal Income Tax Consequences...............................  54
Validity of Notes...........................................................  60
Experts.....................................................................  60





                                      i




                                    SUMMARY



The following summary highlights some information from this prospectus. It may
not contain all of the information that may be important to you. To understand
these exchange offers and consent solicitations fully and for a more complete
description of the legal terms of these exchange offers and consent
solicitations, you should read carefully this entire prospectus and the more
detailed financial information and consolidated financial statements, including
the notes to the financial statements, included or incorporated by reference in
this prospectus and consent solicitation statement. In particular, you should
carefully consider the information set forth under "Risk Factors" beginning on
page 9. Unless otherwise indicated, as used in this prospectus, the terms "we,"
"our" and "us" refer to Markel Corporation and its subsidiaries.


                              Markel Corporation
We are a specialty property and casualty insurer. We market and underwrite
specialty insurance products and programs to a variety of niche markets. We
seek to provide quality products and excellent customer service so that we can
be a market leader. We operate in three distinct areas of the specialty
insurance market:
..  the excess and surplus lines market,
..  the specialty admitted market, and
..  the London insurance market.

Our financial goals are to earn consistent underwriting profits and superior
investment returns in order to build shareholder value. We are a Virginia
corporation headquartered at 4521 Highwoods Parkway, Glen Allen, Virginia
23060-6148. Our telephone number is (804) 747-0136.

                                  Terra Nova

Markel International Limited, formerly Terra Nova Insurance (UK) Holdings plc,
is a wholly owned subsidiary of Terra Nova (Bermuda) Holdings Ltd. and is the
issuer of the Terra Nova notes. We refer to Markel International Limited as
Terra Nova.

Terra Nova is a company organized under the laws of England and Wales with
principal executive offices located at 49 Leadenhall Street, London EC3A 2EA
England, telephone number 44-207-953-6000.

                               Bermuda Holdings


On March 24, 2000, we acquired Terra Nova (Bermuda) Holdings Ltd., which we
refer to as Bermuda Holdings. Bermuda Holdings is our direct wholly owned
subsidiary and is the holding company for our international operations, which
are known as Markel International. At the same time, our existing U.S.
operations became Markel North America. All of the financial information in
this prospectus includes the results of Bermuda Holdings only since the date of
acquisition.


Bermuda Holdings, and its direct and indirect subsidiaries, including Terra
Nova, write specialty property, casualty, marine and aviation insurance on a
direct and reinsurance basis. Business is written worldwide, with the majority
coming from the United Kingdom and the United States. Bermuda Holdings is the
guarantor of the Terra Nova notes.


Bermuda Holdings is a Bermuda company with principal executive offices located
at Richmond House, 12 Par-la-ville Road, Hamilton HMO8, Bermuda, telephone
number 44-1-292-7731.


                                      1



                  Markel Corporation Selected Financial Data





                                                        Year Ended December 31,
                                                ---------------------------------------
                                                 2001     2000     1999    1998   1997
(dollars in millions, except per share data)(1) -------  -------  ------  ------ ------
                                                                  
  Results of Operations
  Earned premiums.............................. $ 1,207  $   939  $  437  $  333 $  333
  Net investment income........................     171      154      88      71     69
  Total operating revenues.....................   1,397    1,094     524     426    419
  Net income (loss)............................    (126)     (28)     41      57     50
  Comprehensive income (loss)..................     (77)      81     (40)     68     92

  Financial Position
  Total investments and cash................... $ 3,591  $ 3,136  $1,625  $1,483 $1,410
  Total assets.................................   6,441    5,473   2,455   1,921  1,870
  Unpaid losses and loss adjustment expenses...   3,700    3,037   1,344     934    971
  Convertible notes payable....................     116       --      --      --     --
  Long-term debt...............................     265      573     168      93     93
  8.71% Capital Securities.....................     150      150     150     150    150
  Shareholders' Equity.........................   1,085      752     383     425    357

  Per Share Data
  Net income (loss) (diluted).................. $(14.73) $ (3.99) $ 7.20  $10.17 $ 8.92
  Book value as of year-end....................  110.50   102.63   68.59   77.02  65.18

--------------------------------------------------------------------------------
(1) Reflects the acquisitions of Gryphon Holding Inc. (January 15, 1999) and
Terra Nova (Bermuda) Holdings Ltd. (March 24, 2000) using the purchase method
of accounting. Also reflects the issuance in 2001 of 2.5 million common shares
with net proceeds of $408 million.

The information as of and for each of the years in the five-year period ended
December 31, 2001 has been derived from and should be read in conjunction with
our audited consolidated financial statements and footnotes incorporated by
reference into this prospectus. See "Where You Can Find More Information."
Certain reclassifications of prior years' amounts have been made to conform
with 2001 presentations.

                                      2



          Terra Nova (Bermuda) Holdings Ltd. Selected Financial Data



                                                    Year Ended December 31,
                                             --------------------------------------
                                             2001(1) 2000(1)  1999   1998(2)  1997
(dollars in millions, except per share data) ------- ------- ------  ------- ------
                                                              
 Results of Operations
 Earned premiums............................ $  540  $  604  $  585  $  547  $  419
 Net investment income......................     76      85      94      93      85
 Total operating revenues...................    633     697     706     658     520
 Net income (loss)..........................   (121)   (132)    (35)     72      73
 Comprehensive income (loss)................   (110)   (100)   (123)     96      93

 Financial Position
 Total investments and cash................. $1,424  $1,369  $1,491  $1,575  $1,476
 Total assets...............................  3,076   2,637   2,632   2,479   2,220
 Unpaid losses and loss adjustment expenses.  2,173   1,672   1,410   1,209   1,158
 Long-term debts............................    173     175     175     175     175
 Shareholder's Equity.......................    169     279     444     571     482

 Per Share Data
 Net income (loss) (diluted)................     --      --  $(1.38) $ 2.77  $ 2.82
 Cash dividends.............................     --      --    0.24    0.23    0.17
 Book value as of year-end..................     --      --   17.50   22.51   18.96

--------------------------------------------------------------------------------
(1) On March 24, 2000, Markel acquired Terra Nova (Bermuda) Holdings Ltd. As a
wholly-owned subsidiary of Markel, per share data is no longer relevant.

(2) Net income, comprehensive income and net income per share are stated after
an extraordinary charge of $11.6 million or $0.45 per share associated with
debt refinancing in May 1998.

The information as of and for each of the years in the five-year period ended
December 31, 2001 has been derived from and should be read in conjunction with
Bermuda Holdings audited consolidated financial statements and footnotes
incorporated by reference into this prospectus. See "Where You Can Find More
Information." Certain reclassifications of prior years' amounts have been made
to conform with 2001 presentations.

                                      3



   Questions and Answers about the Exchange Offers and Consent Solicitations

Q: Why is Markel Making the Exchange Offers and the Consent Solicitations?

A: The exchange offers and the proposed amendments are intended to reduce our
   expenses by eliminating the need to prepare and file separate financial
   statements and reports for Bermuda Holdings, as well as to allow us to
   simplify our capital structure.

Q: What Will I Receive in the Exchange Offers and Consent Solicitations?


A: For each $1,000 principal amount of either series of Terra Nova notes
   validly tendered and accepted for exchange, Markel is offering $1,000
   principal amount of Markel's newly issued notes of a corresponding series.
   Each series of new Markel notes being offered under this prospectus and
   consent solicitation statement will have the same principal amount, interest
   rate, redemption terms and payment and maturity dates as those of the
   corresponding series of Terra Nova notes to be exchanged in the exchange
   offers, and will be issued under and governed by the terms of an indenture
   described in this prospectus, each of which we refer to as a Markel
   indenture. Instead of receiving a payment for accrued interest on Terra Nova
   notes you exchange, the Markel notes you receive in exchange for those Terra
   Nova notes will accrue interest from the last date to which interest has
   been paid on those Terra Nova notes.



   In addition, Markel will pay an amount in cash equal to the applicable
   consent payment listed on the cover page of this prospectus and consent
   solicitation statement to each holder of Terra Nova notes accepted for
   exchange if the holder has tendered those notes prior to the applicable
   consent payment deadline. The consent payment deadline for each exchange
   offer will be 5:00 p.m., New York City time, on May 7, 2002, unless extended.


   As a holder of Terra Nova notes of either series, you may give your consent
   to the proposed amendments to the Terra Nova indentures only by tendering
   your Terra Nova notes in the exchange offer for that series. By so
   tendering, you will be deemed to have given a consent with respect to the
   notes of that series.


Q: What are the Consequences of Not Tendering in the Exchange Offers?



A: If the exchange offers are consummated and the proposed amendments to the
   Terra Nova indentures have been adopted, the amendments also will apply to
   all Terra Nova notes not acquired in the exchange offers. All Terra Nova
   notes that remain outstanding after completion of the exchange offers will
   be governed by the Terra Nova indentures as amended by the proposed
   amendments, which will have less restrictive terms and afford reduced
   protection to the holders of the Terra Nova notes compared to those
   currently in the Terra Nova indentures. See "Risk Factors--Risk Factors
   Relating to the Exchange Offers and Consent Solicitations--The proposed
   amendments to the Terra Nova indentures will afford reduced protection to
   remaining holders of Terra Nova's notes." In addition, holders that do not
   tender in the exchange offers before the consent payment deadline will not
   receive the applicable consent payment, even though the proposed amendments
   will become effective with respect to their Terra Nova notes.


   If the exchange offers are completed, Terra Nova may apply to delist one or
   both series of the Terra Nova notes from the exchange on which they are
   listed. If a series of Terra Nova notes were delisted, then payments of
   interest on the applicable Terra Nova notes to holders may be subject to
   U.K. withholding or other deduction unless the holder provides Terra Nova
   with required information or forms to establish an applicable withholding
   exemption.

                                      4



Q: How do the Terra Nova Notes Differ from the Markel Notes to be Issued in the
   Exchange Offers?


A: The Terra Nova notes are the obligations solely of Terra Nova, guaranteed by
   Bermuda Holdings, and are governed by the Terra Nova indentures, while the
   Markel notes will be the obligations solely of Markel and will be governed
   by the Markel indentures. The Terra Nova indentures and the Markel
   indentures differ in some material respects, including as follows:


   .   The provisions of the Terra Nova indentures limiting the ability of
       Bermuda Holdings and its subsidiaries to incur liens are more
       restrictive than the corresponding provisions of the Markel indentures.

   .   The provisions of the Terra Nova indentures with respect to mergers,
       consolidations and sale of assets are more restrictive than the
       corresponding provisions of the Markel indentures.

   .   The Terra Nova indentures contain provisions requiring the filing of
       specified reports for Bermuda Holdings and payment of additional amounts
       in specified circumstances and the Markel indentures will not contain
       comparable provisions.


   .   The Terra Nova indentures include events of default which are additional
       to and more extensive than the events of default in the Markel
       indentures.



   Most of these provisions will be eliminated from the Terra Nova indentures
   if the proposed amendments are adopted. For a more detailed description of
   the differences between the Terra Nova indentures and the Markel indentures,
   see "Description of Differences Between the Terra Nova Notes and the Markel
   Notes" and "Description of the Markel Notes."





   Because Markel is a holding company that conducts all of its operations
   through its subsidiaries, its ability to meet its obligations under the
   Markel notes is dependent on the earnings and cash flows of those
   subsidiaries and the ability of those subsidiaries to pay dividends or to
   advance or repay funds to Markel. Payment of dividends or advances from
   Markel's insurance subsidiaries may require prior regulatory notice or
   approval. Holders of Markel notes will generally have a junior position to
   claims of creditors of Markel's subsidiaries, including any holders of Terra
   Nova notes not validly tendered and accepted in the exchange offers. As of
   March 31, 2002, the aggregate principal amount of outstanding long-term debt
   of Markel's subsidiaries to which holders of the Markel notes would have
   been structurally subordinated was approximately $170.5 million, all of
   which consists of the two series of Terra Nova notes for which Markel is
   making the exchange offers less the amount of Terra Nova notes held by
   Markel and its subsidiaries. In addition, the Markel indentures will not
   limit the amount of indebtedness that Markel or any of its subsidiaries may
   incur. See "Risk Factors--Risks Relating to the Exchange Offers and Consent
   Solicitations--Our holding company structure results in substantial
   structural subordination and may affect our ability to make payments on the
   Markel notes" and "Description of the Markel Notes--Ranking; Additional
   Debt."


Q: What are the U.S. Federal Income Tax Consequences to Holders that Tender
   Terra Nova Notes in the Exchange Offers?

A: The receipt of Markel notes and consent payments in connection with the
   exchange offers and consent solicitations will be a taxable transaction for
   U.S. federal income tax purposes, and holders of Terra Nova notes validly
   tendered in the exchange offers will, accordingly,

                                      5



   recognize gain or loss, as described in the section of this prospectus and
   consent solicitation statement entitled "Material U.S. Federal Income Tax
   Consequences."

Q: What Consents are Required to Effect the Proposed Amendments to the Terra
   Nova Indentures and Consummate the Exchange Offers?


A: Consents from holders of a majority of the total outstanding principal
   amount, not including notes held by Markel and its subsidiaries, of a
   particular series of Terra Nova notes as of the close of business on May 7,
   2002 must be received in order to amend the Terra Nova indenture with
   respect to that series.



   As of April 15, 2002, Markel and its subsidiaries held approximately $2.0
   million in total principal amount of the 7.2% Terra Nova notes and $2.5
   million in total principal amount of the 7.0% Terra Nova notes. The Terra
   Nova notes held by Markel or its subsidiaries will not be deemed to be
   outstanding for determining the amount required for consent to the
   amendments to the Terra Nova indentures.



   Markel's obligation to complete each exchange offer and to make the consent
   payments relating to that exchange offer is conditioned upon, among other
   things, receipt of valid consents sufficient to effect the amendments with
   respect to both series of Terra Nova notes, although Markel is free to waive
   this or any other condition with respect to either or both of the exchange
   offers. For information about other conditions to Markel's obligation to
   complete the exchange offers and to make the consent payments, see
   "Conditions to the Exchange Offers and Consent Solicitations."


Q: Will Markel Accept All Tenders of Terra Nova Notes?

A: Subject to the satisfaction or waiver of the conditions to each exchange
   offer, Markel will accept for exchange any and all Terra Nova notes of
   either series validly tendered in the applicable exchange offer on or before
   the expiration date of that exchange offer.

Q: When Will Markel Issue New Notes and Make Consent Payments in Exchange for
   Terra Nova Notes?

A: Assuming the conditions to the exchange offers are satisfied or waived,
   Markel will issue new notes in book-entry form and make consent payments in
   exchange for Terra Nova notes on the third business day following the
   expiration date of the applicable exchange offer or as soon as practicable
   after that date.

Q: When do I need to Tender My Terra Nova Notes to Receive the Applicable
   Consent Payment?


A: The consent payment deadline for each exchange offer is 5:00 p.m., New York
   City time on May 7, 2002, unless extended. The consent payment deadline is
   the latest date and time on which you may tender your Terra Nova notes and
   receive the applicable consent payment if these notes are exchanged.


Q: When do the Exchange Offers Expire?


A: The exchange offers will expire at 5:00 p.m., New York City time, on May 20,
   2002, unless Markel, in its sole discretion, extends either or both of the
   exchange offers, in which case the expiration date with respect to an
   exchange offer will be the latest date and time to which that exchange offer
   is extended. See "The Exchange Offers--Consent Payment Deadline; Expiration
   Date; Extensions; Amendments."


                                      6



Q: What are My Rights if I Change My Mind After I Tender My Terra Nova Notes?


A: You may withdraw your tender at any time before the applicable consent
   payment deadline. A valid withdrawal of tendered Terra Nova notes prior to
   the applicable consent payment deadline will also constitute the revocation
   of the related consent to the proposed amendments to the applicable Terra
   Nova indenture. You may only revoke a consent by validly withdrawing the
   related Terra Nova notes prior to the consent payment deadline. Terra Nova
   notes tendered after the consent payment deadline will not be eligible for
   the consent payment, and may not be withdrawn. See "The Exchange
   Offers--Withdrawal of Tenders and Revocation of Corresponding Consents."


Q: How do I Exchange My Terra Nova Notes if I am a Beneficial Owner of Terra
   Nova Notes held of Record by a Custodian Bank, Depositary, Broker, Trust
   Company or other Nominee? Will the Record Holder Exchange My Terra Nova
   Notes for Me?


A: If your Terra Nova notes are held by a custodian bank, depositary, broker,
   trust company or other nominee and you wish to tender the Terra Nova notes
   in the exchange offers, you should contact that institution promptly and
   instruct the institution to tender on your behalf. Only your broker or
   nominee may tender your Terra Nova notes. The record holder will tender your
   Terra Nova notes on your behalf, but only if you instruct the record holder
   to do so. See "The Exchange Offers--Procedures for Tendering--Tender of
   Terra Nova Notes Held through a Nominee."


Q: Do I have the Right to Dissent from the Exchange Offers or Seek Appraisal of
   the Terra Nova Notes I hold?

A: Holders of Terra Nova notes do not have any appraisal or dissenters' rights
   under New York law, the law governing the Terra Nova indentures, or under
   the terms of the Terra Nova indentures in connection with the exchange
   offers and consent solicitations.

Q: To Whom Should I Direct Any Questions?

A: Questions concerning the terms of the exchange offers or the consent
   solicitations should be directed to the dealer manager. Questions concerning
   tender procedures and requests for additional copies of this prospectus and
   consent solicitation statement should be directed to the information agent.
   The addresses and telephone numbers of the dealer manager and the
   information agent are set forth on the back cover page of this prospectus
   and consent solicitation statement.

                                      7



             Markel Corporation Ratio of Earnings To Fixed Charges

The results below include Bermuda Holdings since its acquisition by us on March
24, 2000. Markel's ratio of earnings to fixed charges for each of the periods
shown is as follows:






                                             Years Ended December 31,
                                             ------------------------
                                             2001 2000 1999 1998 1997
                                             ---- ---- ---- ---- ----
                                                  
          Ratio of earnings to fixed charges  *    *   3.0  4.4  4.1





The ratio of earnings to fixed charges is computed by dividing pretax income
from continuing operations before fixed charges by fixed charges. Fixed charges
consist of interest charges and amortization of debt expense and discount or
premium related to indebtedness, whether expensed or capitalized, and that
portion of rental expense we believe to be representative of interest.

     Terra Nova (Bermuda) Holdings Ltd. Ratio of Earnings To Fixed Charges

Bermuda Holdings' ratio of earnings to fixed charges for each of the periods
shown is as follows:






                                             Years Ended December 31,
                                             ------------------------
                                             2001 2000 1999 1998 1997
                                             ---- ---- ---- ---- ----
                                                  
          Ratio of earnings to fixed charges  **   **   **  7.7  7.5





The ratio of earnings to fixed charges is computed by dividing pretax income
from continuing operations before fixed charges by fixed charges. Fixed charges
consist of interest charges and amortization of debt expense and discount or
premium related to indebtedness, whether expensed or capitalized, and that
portion of rental expense we believe to be representative of interest.

--------------------------------------------------------------------------------

* For 2001 and 2000, Markel's earnings were insufficient to cover fixed charges
by $182.2 million and $51.8 million, respectively.

** For 2001, 2000 and 1999, Bermuda Holdings' earnings were insufficient to
cover fixed charges by $180.2 million, $144.7 million and $72.6 million,
respectively.

                                      8




                                 RISK FACTORS


In addition to the other information contained in this prospectus and consent
solicitation statement and the documents incorporated by reference, you should
carefully consider the following risk factors.

    Risk Factors Relating to the Exchange Offers and Consent Solicitations

The proposed amendments to the Terra Nova indentures will afford reduced
protection to remaining holders of Terra Nova notes.

If the proposed amendments to the Terra Nova indentures are adopted, the
covenants and some other terms of the Terra Nova notes will be less restrictive
and will afford reduced protection to holders of those securities compared to
the covenants and other provisions currently contained in the Terra Nova
indentures. The proposed amendments to the Terra Nova indentures would, among
other things:

..  eliminate most of the covenants in the Terra Nova indentures,

..  eliminate restrictions on Bermuda Holdings' ability to consolidate, merge or
   sell all or substantially all of its assets, and

..  eliminate some events of default under the Terra Nova Indentures.

If the proposed amendments are adopted with respect to the Terra Nova notes,
each non-exchanging holder of Terra Nova notes will be bound by the proposed
amendments even if that holder did not consent to the proposed amendments. The
elimination or modification of the covenants and other provisions in the Terra
Nova indentures contemplated by the proposed amendments would, among other
things, permit Markel, Bermuda Holdings, Terra Nova and their respective
subsidiaries to take actions that could increase the credit risk with respect
to Terra Nova or Bermuda Holdings, and might adversely affect the liquidity,
market price and price volatility of the Terra Nova notes or otherwise be
adverse to the interests of the holders of the Terra Nova notes. See "The
Proposed Amendments."

The liquidity of the Terra Nova notes that are not exchanged will be reduced.

The current trading market for the Terra Nova notes is limited. The trading
market for unexchanged Terra Nova notes will become more limited and could
cease to exist due to the reduction in the amount of the Terra Nova notes
outstanding upon consummation of the exchange offers. In addition, Terra Nova
may apply to delist the Terra Nova notes from the exchanges on which they are
listed. A more limited trading market might adversely affect the liquidity,
market price and price volatility of these securities. If a market for
unexchanged Terra Nova notes exists or develops, these securities may trade at
a discount to the price at which the securities would trade if the amount
outstanding were not reduced, depending on prevailing interest rates, the
market for similar securities and other factors. However, there can be no
assurance that an active market in the unexchanged Terra Nova notes will exist,
develop or be maintained or as to the prices at which the unexchanged Terra
Nova notes may be traded.

Our holding company structure results in structural subordination and may
affect our ability to make payments on the Markel notes.

The Markel notes are obligations exclusively of Markel. We are a holding
company and, accordingly, substantially all of our operations are conducted
through our subsidiaries. As a

                                      9




result, our cash flow and our ability to service our debt, including the notes
to be issued in the exchange offers, is dependent upon the earnings of our
subsidiaries and on the distribution of earnings, loans or other payments by
our subsidiaries to us. In addition, payment of dividends by our insurance
subsidiaries may require prior regulatory notice or approval. The Markel notes
offered will be structurally subordinated to all obligations of Markel's
subsidiaries, including any Terra Nova notes not validly tendered and accepted
in the exchange offers, which means that holders of obligations of Markel
subsidiaries have claims on the assets of those subsidiaries that have priority
to claims of holders of the Markel notes. As of March 31, 2002, the aggregate
principal amount of outstanding long-term debt of Markel's subsidiaries to
which holders of the Markel notes would have been structurally subordinated was
approximately $170.5 million, all of which consists of the Terra Nova notes for
which Markel is making the exchange offers (exclusive of Terra Nova notes held
by Markel and its subsidiaries). Our debt agreements do not limit the amount of
debt that we or any of our subsidiaries may incur. See "Description of the
Markel Notes--Ranking; Additional Debt."


A public market does not currently exist for the Markel notes offered in the
exchange offers, and a market may not develop or be sustained.


Markel does not plan to list the Markel notes offered under this prospectus and
consent solicitation statement on any national securities exchange or on The
Nasdaq Stock Market. Although the Terra Nova 7.0% notes due May 15, 2008 are
listed on the New York Stock Exchange and the Terra Nova 7.2% notes due August
15, 2007 are listed on the Luxembourg Stock Exchange, a limited trading market
for the Terra Nova notes currently exists. The Markel notes will represent new
securities for which no such market currently exists. Although a market exists
for currently outstanding debt securities of Markel, there can be no assurance
that an active trading market for the Markel notes offered under this
prospectus and consent solicitation statement will develop or, if a market
develops, that it will be liquid or sustainable.


A ratings decline could adversely affect the value of the Markel notes.

Any of the agencies that rate our debt have the ability to lower the ratings
currently assigned to our debt, as a result of their views about our current or
future business, financial condition or results of operations. Any ratings
decline could adversely affect the value of the Markel notes offered under this
prospectus and consent solicitation statement.

                Risk Factors Relating to the Business of Markel

Our results may be affected because actual insured losses differ from our loss
reserves.

Significant periods of time often elapse between the occurrence of an insured
loss, the reporting of the loss to us and our payment of that loss. To
recognize liabilities for unpaid losses, we establish reserves as balance sheet
liabilities representing estimates of amounts needed to pay reported and
unreported losses and the related loss adjustment expense. The process of
estimating loss reserves is a difficult and complex exercise involving many
variables and subjective judgments. As part of the reserving process, we review
historical data and consider the impact of various factors such as:

..  trends in claim frequency and severity,

..  changes in operations,

..  emerging economic and social trends,

                                      10



..  inflation, and

..  changes in the regulatory and litigation environments.

This process assumes that past experience, adjusted for the effects of current
developments and anticipated trends, is an appropriate basis for predicting
future events. There is no precise method, however, for evaluating the impact
of any specific factor on the adequacy of reserves, and actual results are
likely to differ from original estimates.

We may experience losses from catastrophes.

Because we are a property and casualty insurance company, we frequently
experience losses from man-made or natural catastrophes. Catastrophes may have
a material adverse effect on operations. Catastrophes include windstorms,
hurricanes, earthquakes, tornadoes, hail, severe winter weather, fires and may
include terrorist events such as the attacks on the World Trade Center and
Pentagon on September 11, 2001. We cannot predict how severe a particular
catastrophe may be until after it occurs. The extent of losses from
catastrophes is a function of the total amount of losses incurred, the number
of insureds affected, the frequency of the events and the severity of the
particular catastrophe. Most catastrophes occur in small geographic areas.
However, some catastrophes may produce significant damage in large, heavily
populated areas.

We are subject to regulation by insurance regulatory authorities that may
affect our ability to implement our business objectives.

Our insurance subsidiaries are subject to supervision and regulation by the
insurance regulatory authorities in the various jurisdictions in which they
conduct business. Regulation is intended for the benefit of policyholders
rather than shareholders or holders of debt securities. Insurance regulatory
authorities have broad regulatory, supervisory and administrative powers
relating to solvency standards, licensing, policy rates and forms and the form
and content of financial reports. Regulatory actions may affect our ability to
implement our business objectives. Also, payment of dividends by our insurance
subsidiaries may require prior regulatory notice or approval.

Our investment results may be impacted by changes in interest rates, government
monetary policies and general economic conditions.

We receive premiums from customers for insuring their risks. We invest these
funds until they are needed to pay policyholder claims or until they are
recognized as profits. Many of the policies we issue are denominated in foreign
currencies. Fluctuations in the value of our investment portfolio can occur as
a result of changes in interest rates, government monetary policies and general
economic conditions. Our investment results may be impacted by these factors.

Because the risk profile of the business written and the reinsurance program of
recent acquisitions is different from ours, we may incur additional charges.

The risk profile of the business written and reinsurance programs of our recent
acquisitions was not wholly consistent with those of our other operations. For
example, Bermuda Holdings

                                      11



historically wrote policies with large limits and purchased reinsurance to
reduce the net retention to a smaller sum. Such reliance on reinsurance may
create credit risk as a result of the reinsurer's inability or unwillingness to
pay reinsurance claims when due. We have begun to implement policies to reduce
this reliance on reinsurance in the future, but must still account for and
collect reinsurance for business written prior to our acquisition.
Deterioration in the credit quality of existing reinsurers or disputes over the
terms of reinsurance could result in additional charges, which may impact our
profitability.

Because loss reserves are estimates based upon historical experience and
statistical data, there can be no assurances that the loss reserves for recent
acquisitions are adequate and that there will not be any future impact on our
financial performance.

It has long been our policy to establish loss reserves at a level that we
believe is more likely to prove redundant rather than deficient. Many other
companies in the insurance industry establish loss reserves that are
"adequate," often defined as the mid-point of an actuarially determined range,
i.e., as likely to be too little as too much. When we acquire a company, we
seek to apply our policy over time to the reserving practices of the acquired
company. However, because loss reserve estimates are based on historical
experience and statistical analyses, we often do not have sufficient
information for a period of time following the date of an acquisition to
implement this policy immediately. As we continue to gather information and
obtain additional experience, we can better implement our approach and,
depending on the relevant experience, this may result in additional charges to
strengthen reserves.

                                      12




                        CAUTIONARY STATEMENT REGARDING


                          FORWARD-LOOKING STATEMENTS


This prospectus and consent solicitation statement and the documents
incorporated by reference in this prospectus and consent solicitation statement
contain both historical and forward-looking statements. All statements other
than statements of historical fact are, or may be deemed to be, forward-looking
statements. Forward-looking statements may be identified by the use of terms
such as believes, expects, estimate, may, intends, plan, will, should or
anticipates or the negative thereof or similar expressions, or by discussions
of strategy. We have based the forward-looking statements on current
expectations and projections about future events. These forward-looking
statements are subject to risks, uncertainties and assumptions about us,
including:


..  uncertainties and changes in government policy, regulatory policy, statutory
   law or case law with respect to us, brokers or customers which can impede
   our ability to charge adequate rates and efficiently allocate capital;


..  the amount and nature of competition in the insurance industry and the
   amount of capital within the industry and alternative risk transfer markets;

..  the occurrence of man-made or natural catastrophic events;

..  assumptions about the impact of events of September 11, 2001, such as the
   number of insureds and reinsureds affected by the events, the amount and
   timing of losses incurred and reported and questions of how coverage applies;

..  the occurrence of additional terrorist activities;

..  the occurrence of significant changes in products or adverse changes in
   insurance and financial market conditions;

..  changing legal and social trends and the inherent uncertainties of the
   reserving process;

..  loss of the services of any of our executive officers;

..  initiatives underway at Markel International to reorganize business units
   and to evaluate reinsurance programs and exposures that could lead to
   additional changes and expense;

..  assumptions about future profitability at Markel International and that
   Markel International will make steady progress towards underwriting
   profitability;

..  changing rates of inflation and other economic conditions;

..  losses due to foreign currency exchange rate and interest rate fluctuations;

..  ability to collect reinsurance recoverables;

..  changes in the availability, cost or quality of reinsurance;

..  developments in domestic and international financial markets that could
   affect our investment portfolios;

..  changes in assigned financial strength or debt ratings;

                                      13



..  changes in the distribution or placement of risks due to increased
   consolidation of insurance and reinsurance brokers; and

..  the effect of mergers, acquisitions and divestitures.

We undertake no obligation to publicly update or revise any forward-looking
statements, whether as a result of new information, future events or otherwise.
In light of these risks, uncertainties and assumptions, the forward-looking
events discussed herein might not occur. You are cautioned not to place undue
reliance on any forward-looking statements, which speak only as of their dates.

                                      14




                      WHERE YOU CAN FIND MORE INFORMATION



Markel and Bermuda Holdings are subject to the informational reporting
requirements of the Securities Exchange Act of 1934. You may read and copy any
document that they file at the Public Reference Room of the SEC at 450 Fifth
Street, N.W., Washington, D.C. 20549. Information on the operation of the
Public Reference Room may be obtained by calling the SEC at 1-800-SEC-0330. You
may also inspect Markel's and Bermuda Holdings' annual, quarterly, special
reports, any proxy statements and other information over the Internet at the
SEC's home page at http://www.sec.gov. Markel's common shares are listed on the
New York Stock Exchange under the symbol "MKL," and one series of the Terra
Nova notes are also listed on the New York Stock Exchange. Markel's and Bermuda
Holdings' filings may also be read and copied at the New York Stock Exchange at
20 Broad Street, New York, NY 10005.


This prospectus and consent solicitation statement is part of a registration
statement Markel has filed with the SEC relating to the Markel notes. As
permitted by SEC rules, this prospectus and consent solicitation statement does
not contain all of the information Markel has included in the registration
statement and the accompanying exhibits and schedules. You may refer to the
registration statement, exhibits and schedules for more information about
Markel and its securities. The registration statement, exhibits and schedules
are available at the SEC's Public Reference Room or through its Web site.

The SEC allows Markel to "incorporate by reference" the information filed with
them, which means that Markel can disclose important information to you by
referring you to those documents. The information Markel incorporates by
reference is an important part of this prospectus and consent solicitation
statement, and later information filed with the SEC will automatically update
and supersede this information. Markel incorporates by reference the documents
listed below and any future filings Markel makes with the SEC under Sections
13(a), 13(c), 14 or 15(d) of the Securities Exchange Act of 1934 until all the
offered securities are sold. The documents incorporated by reference are:

..  Markel's Annual Report on Form 10-K for the year ended December 31, 2001.

..  Terra Nova (Bermuda) Holdings Ltd.'s Annual Report on Form 10-K for the year
   ended December 31, 2001.


You may request a copy of these filings (other than an exhibit to that filing,
unless we have specifically incorporated that exhibit by reference into this
filing), which will be provided at no cost, by writing or telephoning the
information agent at the address or telephone number set forth on the back
cover of this prospectus and consent solicitation statement. In order to ensure
timely delivery of these documents, you should make your request by May 15,
2002 or five days before the expiration of any extension of the exchange
offers, whichever is later.


                                      15




                              THE EXCHANGE OFFERS


Terms of the Exchange Offers and Consent Solicitations

Markel is offering to exchange its notes for each of the two series of issued
and outstanding Terra Nova notes in two separate exchange offers. Specifically,
Markel is offering:


..  $1,000 principal amount of Markel Corporation's 7.2% Senior Notes due August
   15, 2007, which we refer to as the "Markel 7.2% notes," for each $1,000
   principal amount of outstanding Terra Nova 7.2% notes due August 15, 2007,
   which we refer to as the "Terra Nova 7.2% notes."



..  $1,000 principal amount of Markel Corporation's 7.0% Senior Notes due May
   15, 2008, which we refer to as the "Markel 7.0% notes," for each $1,000
   principal amount of outstanding Terra Nova 7.0% notes due May 15, 2008,
   which we refer to as the "Terra Nova 7.0% notes."


The principal amounts, interest rates, redemption terms and payment and
maturity dates of a particular series of Markel notes offered in the exchange
offers are the same as those of the corresponding series of Terra Nova notes.
The Markel notes you receive in exchange for Terra Nova notes will accrue
interest from the last date to which interest has been paid on those Terra Nova
notes. You will not receive a payment for accrued interest on Terra Nova notes
you exchange at the time of that exchange.

We refer to the Markel 7.2% notes and Markel 7.0% notes together as the "Markel
notes." The Terra Nova 7.2% notes and Terra Nova 7.0% notes are together
referred to as the "Terra Nova notes." The indenture for the Terra Nova 7.2%
notes is referred to as the "Terra Nova 7.2% notes indenture." The indenture
for the Terra Nova 7.0% notes is referred to as the "Terra Nova 7.0% notes
indenture." The Terra Nova 7.2% notes indenture and the Terra Nova 7.0% notes
indenture are together referred to as the "Terra Nova indentures."

Markel is also soliciting consents from the holders of each series of Terra
Nova notes to effect amendments to each of the Terra Nova indentures under
which those notes were issued. For a description of the proposed amendments,
see "The Proposed Amendments." Markel's obligation to complete each exchange
offer and to make the consent payments relating to that exchange offer is
conditioned on, among other things, receipt of valid and unrevoked consents to
the amendments by the consent payment deadline from the holders of a majority
in principal amount outstanding of each of the two series of Terra Nova notes,
which we refer to as the consent condition, although Markel will be free to
waive this or any other condition with respect to either of the exchange
offers. A holder validly tendering notes for exchange will, by tendering those
notes, be consenting to the proposed amendments to the indenture under which
those notes were issued.


In addition to the Markel notes that Markel will issue in exchange for Terra
Nova notes, Markel will pay an amount in cash equal to the applicable consent
payment listed on the cover page of this prospectus and consent solicitation
statement to each holder of Terra Nova notes accepted for exchange if the
holder has tendered those notes prior to the applicable consent payment
deadline. The time by which holders must tender Terra Nova notes in that offer
in order to be eligible to receive the consent payment will be 5:00 p.m., New
York City time, on May 7, 2002, unless extended.


                                      16



   Markel will make a consent payment for Terra Nova notes only if the holder
   of those notes tenders those notes in the applicable exchange offer prior to
   the applicable consent payment deadline and Markel in fact exchanges those
   notes for Markel notes in that exchange offer.


If the required consents are received with respect to each series of Terra Nova
notes, then Terra Nova, Bermuda Holdings and the trustee with respect to each
series of the Terra Nova notes under the Terra Nova indentures will execute
supplemental indentures setting forth the proposed amendment in respect of both
series. If the required consents are received with respect to one, but not
both, series of Terra Nova notes and Markel waives the condition that it
receive consents to the proposed amendments to the Terra Nova indenture with
respect to each series of Terra Nova notes, then Terra Nova, Bermuda Holdings
and the Terra Nova trustee will execute a supplemental indenture setting forth
the proposed amendments in respect of the series as to which the required
consents are received. Under the terms of the supplemental indentures, the
amendment will not become operative with respect to a series of Terra Nova
notes until Markel exchanges all Terra Nova notes of that series validly
tendered and not withdrawn for Markel notes of the corresponding series
pursuant to the applicable exchange offer. Each non-exchanging holder of that
series of Terra Nova notes will be bound by the supplemental indenture.


Conditions to the Exchange Offers and Consent Solicitations

Markel's obligation to complete each exchange offer and to make the consent
payments relating to that exchange offer is subject to the satisfaction or
waiver by Markel of the following conditions:

..  the consent condition described under "Terms of the Exchange Offers and
   Consent Solicitations" above,

..  the following statements being true:

  (1) There does not exist:

     .  in our sole judgment, any actual or threatened legal impediment,
        including a default under an agreement, indenture or other instrument
        or obligation to which we are party or by which we are bound, to the
        consummation of the exchange offers or

     .  any change or development, including a prospective change or
        development, that, in our sole judgment, has or may have a material
        adverse effect on us or on the value of the exchange offers to us; and

  (2) The Terra Nova trustee has executed and delivered a supplemental
      indenture relating to the proposed amendments and has not objected in any
      respect to, or taken any action that could in our reasonable judgment
      adversely affect the consummation of:

     .  either of the exchange offers;

     .  the exchange of Terra Nova notes under the exchange offers;

     .  the consent solicitations; or

     .  our ability to effect the proposed amendments,

..  the Terra Nova trustee has not taken any action that challenges the validity
   or effectiveness of the procedures used by Markel in soliciting consents,
   including

                                      17



        the form thereof, or in making the exchange offers, the exchange of the
        Terra Nova notes under the exchange offers or the consent solicitations.

All of these conditions are for the sole benefit of Markel and may be waived by
Markel, in whole or in part, and with respect to the exchange offers for either
or both series of Terra Nova notes, in its sole discretion. Any determination
made by Markel concerning these events, developments or circumstances shall be
conclusive and binding.


If any of these conditions are not satisfied with respect to either series of
Terra Nova notes, Markel may, at any time before or concurrently with
completing the exchange offer or consent solicitation with respect to that
series:



..  terminate the exchange offer and the consent solicitation with respect to
   that series of Terra Nova notes and return all tendered Terra Nova notes of
   that series to the holders thereof, whether or not it terminates the
   exchange offer and consent solicitation with respect to the other series of
   Terra Nova notes,



..  modify, extend or otherwise amend the exchange offer and consent
   solicitation with respect to that series of Terra Nova notes whether or not
   it modifies, extends or otherwise amends the exchange offer and consent
   solicitation with respect to the other series of Terra Nova notes, and
   retain all tendered Terra Nova notes of that series and consents until the
   expiration date, as extended, of that exchange offer and consent
   solicitation, subject, however, to the withdrawal rights of holders (See
   "The Exchange Offers--Withdrawal of Tenders and Revocation of Corresponding
   Consents" and "--Consent Payment Deadline; Expiration Date; Extensions;
   Amendments"), or



..  waive the unsatisfied conditions with respect to that exchange offer and
   consent solicitation and accept all Terra Nova notes of that series tendered
   and not previously withdrawn, whether or not it waives these conditions for
   the exchange offer and consent solicitation with respect to the other series
   of Terra Nova notes.


Consent Payment Deadline, Expiration Date, Extensions, Amendments


For purposes of each of the consent solicitations, the term "consent payment
deadline" means 5:00 p.m., New York City time, on May 7, 2002, subject to the
right of Markel to extend that date and time for either of the consent
solicitations in its sole discretion (whether or not it extends that date and
time with respect to the other consent solicitation), in which case the consent
payment deadline will be, with respect to that extended consent solicitation,
the latest date and time to which that consent payment deadline is extended.



For purposes of each of the exchange offers, the term "expiration date" means
5:00 p.m., New York City time, on May 20, 2002, subject to the right of Markel
to extend that date and time for either of the exchange offers in its sole
discretion, in which case the expiration date shall be, with respect to that
extended exchange offer, the latest date and time to which that exchange offer
is extended.


Markel reserves the right, in its sole discretion, to:

..  delay accepting any validly tendered Terra Nova notes of either series,

..  extend either or both of the exchange offers, or

                                      18



..  terminate or amend either or both of the exchange offers, by giving oral or
   written notice of such delay, extension, termination or amendment to the
   exchange agent.

Any delay in acceptance, extension, termination or amendment will be followed
as promptly as practicable by a public announcement thereof which, in the case
of an extension, will be made no later than 9:00 a.m., New York City time, on
the next business day after the previously scheduled expiration date.

Markel also reserves the right, in its sole discretion, to provide a subsequent
offering period of between three and 20 business days for either or both of the
exchange offers. If a subsequent offering period is provided, all Terra Nova
notes validly tendered and not withdrawn prior to the consent payment deadline
of the initial offering period will be accepted and exchanged for Markel notes
and we will make a public announcement of the subsequent offering period no
later than 9:00 a.m., New York City time, on the next business day after the
expiration date of the initial offering period. Unless otherwise provided in
the announcement of the subsequent offering period, all Terra Nova notes
validly tendered during the subsequent offering period will be promptly
accepted and exchanged for the applicable series of Markel notes as they are
tendered. Unless otherwise provided in the announcement of the subsequent
offering period, holders of Terra Nova notes will not have the right to
withdraw notes tendered during the subsequent offering period and no consent
payment will be made with respect to notes tendered during the subsequent
offering period.

If the exchange offers are amended in a manner determined by Markel to
constitute a material change, Markel will promptly disclose that amendment by
means of a prospectus supplement that will be distributed to holders of Terra
Nova notes and Markel will extend the exchange offers to a date five to ten
business days after disclosing the amendment, depending upon the significance
of the amendment and the manner of disclosure to the holders, if the exchange
offers would otherwise have expired during that five to ten business day period.

Without limiting the manner in which Markel may choose to make a public
announcement of any delay, extension, amendment or termination of either of the
exchange offers and consent solicitations, Markel will have no obligation to
publish, advertise or otherwise communicate that public announcement other than
by making a timely release to any appropriate news agency, including the Dow
Jones News Service.

Effect of Tender

Any tender by a holder of either series of Terra Nova notes that is not
withdrawn prior to the applicable consent payment deadline of the applicable
exchange offer will constitute a binding agreement between that holder and
Markel, and a consent to the proposed amendments, upon the terms and subject to
the conditions of that exchange offer and the related letter of transmittal and
consent. The acceptance of an exchange offer by a tendering holder of either
series of Terra Nova notes will constitute the agreement by that holder to
deliver good and marketable title to the tendered Terra Nova notes, free and
clear of all liens, charges, claims, encumbrances, interests and restrictions
of any kind. The successful completion of the exchange offers may adversely
affect the liquidity and market prices of any remaining Terra Nova notes.

                                      19



Absence of Dissenters' Rights

Holders of the Terra Nova notes do not have any appraisal or dissenters' rights
under New York law, the law governing the Terra Nova indentures and the Terra
Nova notes, or under the terms of the Terra Nova indentures in connection with
the exchange offers and consent solicitations.

Accounting Treatment of Exchange Offers

We will account for the exchange offers as an exchange of debt under United
States generally accepted accounting principles. The Markel notes to be issued
in the exchange offers will be recorded at the same carrying value as the Terra
Nova notes. Accordingly, we will recognize no gain or loss for accounting
purposes upon the consummation of the exchange offers. Markel will amortize a
portion of the expenses of the exchange offers over the term of the Markel
notes issued in the exchange offers.

Acceptance of Terra Nova Notes for Exchange, Delivery of Markel Notes and
Consent Payments

Assuming the conditions to the exchange offers are satisfied or waived, Markel
will issue new notes in book-entry form and will make consent payments in
exchange for Terra Nova notes on the third business day following the
expiration date of the applicable exchange offer or as soon as practicable
after that date. We refer to the date on which we exchange Markel notes for
Terra Nova notes pursuant to any exchange offer as the "exchange date" for that
exchange offer.

Markel will be deemed to have accepted validly tendered Terra Nova notes of
either series when, and if, Markel has given oral or written notice thereof to
the exchange agent. Subject to the terms and conditions of the exchange offers,
the exchange agent will deliver the Markel notes and make the consent payments
for Terra Nova notes of either series accepted by Markel on the applicable
exchange date upon receipt of that notice. The exchange agent will act as agent
for tendering holders of the Terra Nova notes for the purpose of receiving
Terra Nova notes from and transmitting Markel notes and consent payments to
those holders. If any tendered Terra Nova notes are not accepted for any reason
set forth in the terms and conditions of the exchange offers or if Terra Nova
notes are withdrawn prior to the applicable consent payment deadline, those
unaccepted or withdrawn Terra Nova notes will be returned without expense to
the tendering holder as promptly as practicable after the expiration or
termination of the applicable exchange offer.

Procedures for Tendering

If you hold Terra Nova notes of either series and wish to have those notes
exchanged for Markel notes of the corresponding series, you must validly tender
(or cause the valid tender of) your Terra Nova notes using the procedures
described in this prospectus and consent solicitation statement and in the
accompanying letter of transmittal and consent. The proper tender of Terra Nova
notes will constitute an automatic consent to the proposed amendments to the
Terra Nova indentures.

The procedures by which you may tender or cause to be tendered Terra Nova notes
will depend upon the manner in which you hold the Terra Nova notes, as
described below.

                                      20



Tender of Terra Nova Notes held through a Nominee

If you are a beneficial owner of Terra Nova notes that are held of record by a
custodian bank, depositary, broker, trust company or other nominee, and you
wish to tender Terra Nova notes in either of the exchange offers, you should
contact the record holder promptly and instruct the record holder to tender the
Terra Nova notes and deliver a consent on your behalf using one of the
procedures described below.

Tender of Terra Nova Notes with DTC

Pursuant to authority granted by The Depository Trust Company, or DTC, if you
are a DTC participant that has Terra Nova notes credited to your DTC account
and thereby held of record by DTC's nominee, you may directly tender your Terra
Nova notes and deliver a consent as if you were the record holder. Accordingly,
references herein to record holders include DTC participants with Terra Nova
notes credited to their accounts. Within two business days after the date of
this prospectus and consent solicitation statement, the exchange agent will
establish accounts with respect to the Terra Nova notes at DTC for purposes of
the exchange offers.

Any participant in DTC, including the respective depositants for Euroclear and
Clearstream, Luxembourg, may tender Terra Nova notes and deliver a consent to
the proposed amendments to the Terra Nova indentures by effecting a book-entry
transfer of the Terra Nova notes to be tendered in the applicable exchange
offer(s) into the account of the exchange agent at DTC and either:

..  electronically transmitting its acceptance of the applicable exchange offer
   through DTC's Automated Tender Offer Program ("ATOP") procedures for
   transfer, or

..  completing and signing the letter of transmittal and consent according to
   the instructions and delivering it, together with any signature guarantees
   and other required documents, to the exchange agent at its address on the
   back cover page of this prospectus and consent solicitation statement, in
   either case before the applicable exchange offer(s) expire(s).

If ATOP procedures are followed, DTC will verify each acceptance transmitted to
it, execute a book-entry delivery to the exchange agent's account at DTC and
send an agent's message to the exchange agent. An "agent's message" is a
message, transmitted by DTC to and received by the exchange agent and forming
part of a book-entry confirmation, which states that DTC has received an
express acknowledgement from a DTC participant tendering Terra Nova notes that
the participant has received and agrees to be bound by the terms of the letter
of transmittal and consent and that Markel and Terra Nova may enforce the
agreement against the participant. DTC participants following this procedure
should allow sufficient time for completion of the ATOP procedures prior to the
expiration date of the applicable exchange offer.

The letter of transmittal and consent (or facsimile thereof), with any required
signature guarantees, or (in the case of book-entry transfer) an agent's
message in lieu of the letter of transmittal and consent, and any other
required documents, must be transmitted to and received by the exchange agent
prior to the expiration date of the applicable exchange offer at one of its
addresses set forth on the back cover page of this prospectus and consent
solicitation statement. Delivery of such documents to DTC does not constitute
delivery to the exchange agent. If you wish to receive the consent payment, you
must deliver a letter of transmittal and consent, or, in the case of book-entry
transfer, an agent's message instead of the letter of transmittal and

                                      21



consent, to the exchange agent prior to the consent payment deadline of the
applicable exchange offer.

Letter of Transmittal and Consent

Subject to and effective upon the acceptance for exchange and exchange of
Markel notes for Terra Nova notes tendered by a letter of transmittal and
consent in accordance with the terms and subject to the conditions set forth in
this prospectus and consent solicitation statement, by executing and delivering
a letter of transmittal and consent (or agreeing to the terms of a letter of
transmittal and consent pursuant to an agent's message) a tendering holder of
Terra Nova notes:

..  irrevocably sells, assigns and transfers to or upon the order of Markel all
   right, title and interest in and to, and all claims in respect of or arising
   or having arisen as a result of the holder's status as a holder of the Terra
   Nova notes tendered thereby,

..  waives any and all rights with respect to the Terra Nova notes, including
   any existing or past defaults and their consequences in respect of the Terra
   Nova notes,

..  releases and discharges Markel, Terra Nova, Bermuda Holdings and the Terra
   Nova trustee from any and all claims such holder may have, now or in the
   future, arising out of or related to the Terra Nova notes and related
   guarantee, including any claims that such holder is entitled to receive
   additional principal or interest payments with respect to the Terra Nova
   notes (other than as expressly provided in this document and in the letter
   of transmittal and consent) or to participate in any redemption or
   defeasance of the Terra Nova notes,

..  represents and warrants that the Terra Nova notes tendered were owned as of
   the date of tender, free and clear of all liens, charges, claims,
   encumbrances, interests and restrictions of any kind,

..  consents to the proposed amendments described under "Proposed Amendments"
   below, and

..  irrevocably constitutes and appoints the exchange agent the true and lawful
   agent and attorney-in-fact of the holder with respect to any tendered Terra
   Nova notes, with full powers of substitution and revocation (such power of
   attorney being deemed to be an irrevocable power coupled with an interest)
   to cause the Terra Nova notes tendered to be assigned, transferred and
   exchanged in the applicable exchange offer.

There is a single form of letter of transmittal and consent that you can fill
out for either series of Terra Nova notes.

Proper Execution and Delivery of Letter of Transmittal and Consent

If you wish to participate in the exchange offers and consent solicitations,
delivery of your Terra Nova notes, signature guarantees and other required
documents are your responsibility. Delivery is not complete until the required
items are actually received by the exchange agent. If you mail these items,
Markel recommends that you:


..  use registered mail properly insured with return receipt requested, and


..  mail the required items sufficiently in advance of the expiration date with
   respect to the applicable exchange offer to allow sufficient time to ensure
   timely delivery.

                                      22



Except as otherwise provided below, all signatures on the letter of transmittal
and consent or a notice of withdrawal must be guaranteed by a recognized
participant in the Securities Transfer Agents Medallion Program, the NYSE
Medallion Signature Program or the Stock Exchange Medallion Program. Signatures
on the letter of transmittal and consent need not be guaranteed if:

..  the letter of transmittal and consent is signed by a participant in DTC
   whose name appears on a security position listing of DTC as the owner of the
   Terra Nova notes and that registered holder has not completed the portion
   entitled "Special Issuance and Payment Instructions" or "Special Delivery
   Instructions" on the letter of transmittal and consent, or


..  the Terra Nova notes are tendered for the account of a firm that is a member
   of a registered national securities exchange or the National Association of
   Securities Dealers, Inc. or is a commercial bank or trust company having an
   office in the United States, each, an "eligible institution." See
   Instruction 4 in the letter of transmittal and consent.


Withdrawal of Tenders and Revocation of Corresponding Consents


Tenders of Terra Nova notes in connection with any of the exchange offers may
be withdrawn at any time prior to expiration of the applicable consent payment
deadline. Tenders of Terra Nova notes may not be withdrawn at any time after
the consent payment deadline. The valid withdrawal of tendered Terra Nova notes
prior to the applicable consent payment deadline will be deemed to be a
concurrent revocation of the related consent to the proposed amendments to the
applicable Terra Nova indenture. You may only revoke a consent by validly
withdrawing the related Terra Nova notes prior to the consent payment deadline.
Tenders of notes made after the consent payment deadline may not be withdrawn.


Beneficial owners desiring to withdraw Terra Nova notes previously tendered
should contact the DTC participant through which they hold their Terra Nova
notes. In order to withdraw Terra Nova notes previously tendered, a DTC
participant may, prior to the applicable consent payment deadline, withdraw its
instruction previously transmitted through ATOP by:

..  withdrawing its acceptance through ATOP, or

..  delivering to the exchange agent by mail, hand delivery or facsimile
   transmission, notice of withdrawal of such instruction.

The notice of withdrawal must contain the name and number of the DTC
participant. Withdrawal of a prior instruction will be effective upon receipt
of the notice of withdrawal by the exchange agent. All signatures on a notice
of withdrawal must be guaranteed by a recognized participant in the Securities
Transfer Agents Medallion Program, the NYSE Medallion Signature Program or the
Stock Exchange Medallion Program, except that signatures on the notice of
withdrawal need not be guaranteed if the Terra Nova notes being withdrawn are
held for the account of an eligible institution. A withdrawal of an instruction
must be executed by a DTC participant in the same manner as the DTC
participant's name appears on its transmission through ATOP to which the
withdrawal relates. A DTC participant may withdraw a tender only if such
withdrawal complies with the provisions described in this paragraph.

Withdrawals of tenders of Terra Nova notes may not be rescinded and any Terra
Nova notes withdrawn will thereafter be deemed not validly tendered for
purposes of either exchange offer.

                                      23




Properly withdrawn Terra Nova notes, however, may be retendered by following
the procedures described above at any time prior to the expiration of the
applicable exchange offer, provided, however, in order to receive the consent
payment, those Terra Nova notes must be retendered prior to the consent payment
deadline of the applicable exchange offer.


Miscellaneous

All questions as to the validity, form, eligibility (including time of receipt)
and acceptance for exchange of any tender of Terra Nova notes in connection
with any exchange offer will be determined by Markel, in its sole discretion,
whose determination will be final and binding. Markel reserves the absolute
right to reject any or all tenders not in proper form or the acceptance for
exchange of which may, in the opinion of counsel for Markel, be unlawful.
Markel also reserves the absolute right to waive any defect or irregularity in
the tender of any Terra Nova notes in either exchange offer, and the
interpretation by Markel of the terms and conditions of its exchange offers
(including the instructions in the letter of transmittal and consent) will be
final and binding on all parties. None of Markel, Terra Nova, the exchange
agent, the information agent, the dealer manager or any other person will be
under any duty to give notification of any defects or irregularities in tenders
or incur any liability for failure to give any such notification.

Tenders of Terra Nova notes involving any irregularities will not be deemed to
have been made until those irregularities have been cured or waived. Terra Nova
notes received by the exchange agent in connection with any exchange offer that
are not validly tendered and as to which the irregularities have not been cured
or waived will be returned by the exchange agent to the DTC participant who
delivered those Terra Nova notes by crediting an account maintained at DTC
designated by that DTC participant as promptly as practicable after the
expiration date of the applicable exchange offer or the withdrawal or
termination of the applicable exchange offer.

Transfer Taxes

Markel will pay all transfer taxes, if any, applicable to the transfer and sale
of Terra Nova notes to Markel in the exchange offers. If transfer taxes are
imposed for any other reason, the amount of those transfer taxes, whether
imposed on the registered holders or any other persons, will be payable by the
tendering holder. Other reasons transfer taxes could be imposed include:

..  if Markel notes in book-entry form are to be registered in the name of any
   person other than the person signing the letter of transmittal and consent,
   or

..  if tendered Terra Nova notes are registered in the name of any person other
   than the person signing the letter of transmittal and consent.

If satisfactory evidence of payment of or exemption from those transfer taxes
is not submitted with the letter of transmittal and consent, the amount of
those transfer taxes will be billed directly to the tendering holder and/or
withheld from any payments due with respect to the Terra Nova notes tendered by
that holder.

U.S. Federal Backup Withholding; Withholding on Consent Payments to Non-U.S.
Holders

U.S. federal income tax law requires that a holder of Terra Nova notes, whose
notes are accepted for exchange, provide the exchange agent, as payer, with the
holder's correct taxpayer

                                      24



identification number or otherwise establish a basis for an exemption from
backup withholding. This information should be provided on Internal Revenue
Service Substitute Form W-9 in the case of a U.S. holder described below. In
the case of a holder who is an individual, including most resident aliens, this
identification number is his or her social security number. For holders other
than individuals, the identification number is an employer identification
number. Exempt holders, including, among others, all corporations and certain
foreign individuals, are not subject to these backup withholding and reporting
requirements, but must establish that they are so exempt. If you do not provide
the exchange agent with your correct taxpayer identification number or an
adequate basis for an exemption or a completed IRS Form W-8BEN ("Certificate of
Foreign Status of Beneficial Owner for United States Tax Withholding"), you may
be subject to backup withholding on consent payments and a penalty imposed by
the IRS. Backup withholding is not an additional federal income tax. Rather,
the amount of tax withheld will be credited against the federal income tax
liability of the holder subject to backup withholding. If backup withholding
results in an overpayment of taxes, you may obtain a refund from the IRS. You
should consult with a tax advisor regarding qualifications for exemption from
backup withholding and the procedure for obtaining the exemption.

Exchange Agent


JPMorgan Chase Bank has been appointed the exchange agent for the exchange
offers and consent solicitations. Letters of transmittal and consent and all
correspondence in connection with the exchange offers should be sent or
delivered by each holder of Terra Nova notes, or a beneficial owner's custodian
bank, depositary, broker, trust company or other nominee, to the exchange agent
at the addresses and telephone numbers set forth on the back cover page of this
prospectus and consent solicitation statement. Markel will pay the exchange
agent reasonable and customary fees for its services and will reimburse it for
its reasonable, out-of-pocket expenses in connection therewith. J.P. Morgan
Securities Inc., the dealer manager is an affiliate of JPMorgan Chase Bank, the
exchange agent.


Information Agent


MacKenzie Partners, Inc. has been appointed as the information agent for the
exchange offers and the consent solicitations, and will receive customary
compensation for its services. Questions concerning tender procedures and
requests for additional copies of this prospectus and consent solicitation
statement or the letter of transmittal and consent should be directed to the
information agent at the address and telephone numbers set forth on the back
cover page of this prospectus and consent solicitation statement. Holders of
Terra Nova notes may also contact their custodian bank, depositary, broker,
trust company or other nominee for assistance concerning the exchange offers.


Dealer Manager

Markel has retained J.P. Morgan Securities Inc. to act as dealer manager in
connection with the exchange offers and consent solicitations and will pay to
the dealer manager for soliciting tenders in the exchange offers a customary
percentage of the total principal amount outstanding of each series of Terra
Nova notes if the consent condition is satisfied and the exchange offers are
completed. Markel will also reimburse the dealer manager for certain expenses.
The obligations of the dealer manager to perform this function are subject to
certain conditions.

                                      25



Markel has agreed to indemnify the dealer manager against certain liabilities,
including liabilities under the federal securities laws. Questions regarding
the terms of the exchange offers or the consent solicitations may be directed
to the dealer manager at the address and telephone numbers set forth on the
back cover page of this prospectus and consent solicitation statement.


From time to time, the dealer manager has provided, and may provide in the
future, investment banking, commercial banking and other services for Markel
and Terra Nova. The dealer manager, in the ordinary course of its business, may
make markets in our securities, including the Terra Nova notes. As a result,
from time to time, the Dealer Manager may own certain of our securities,
including the Terra Nova notes.


Other Fees and Expenses

Markel will pay the expenses of soliciting tenders of the Terra Nova notes. The
principal solicitation is being made by mail; however, additional solicitations
may be made by facsimile transmission, telephone or in person by the dealer
manager and the information agent, as well as by officers and other employees
of Markel and its affiliates.

Tendering holders of Terra Nova notes will not be required to pay any fee or
commission to the dealer manager. However, if a tendering holder handles the
transaction through its broker, dealer, commercial bank, trust company or other
institution, that holder may be required to pay brokerage fees or commissions.

                                      26




                      DESCRIPTION OF DIFFERENCES BETWEEN


                   THE TERRA NOVA NOTES AND THE MARKEL NOTES


The following is a summary comparison of the material terms of the Terra Nova
notes and the Markel notes. The Markel 7.2% notes due 2007 and the Markel 7.0%
notes due 2008 will each be governed by a separate Markel indenture which will
be substantially the same as the indentures governing the Terra Nova notes
except for the material terms described below and differences arising from the
original issuance of the Terra Nova notes in a transaction exempt from
registration under the Securities Act of 1933. The summary does not purport to
be complete and is qualified in its entirety by reference to the Terra Nova
indentures and the Markel indentures. Copies of those indentures have been
filed as exhibits to the registration statement of which this prospectus and
consent solicitation statement forms a part and are available from the
information agent upon request. See "Where You Can Find More Information" for
information as to how you can obtain a copy of these indentures from the SEC.


Each series of Terra Nova notes was issued as a global note without coupons in
bearer form deposited with a custodian for the benefit of a depositary pursuant
to a depositary agreement. The depositary issued one or more global receipts
representing each series of Terra Nova notes which was delivered and registered
in the name of DTC or its nominee and which represents 100% of the beneficial
interest in each series of Terra Nova notes. The Markel notes will be
represented by one or more global securities. See "Description of the Markel
Notes -- Book-Entry System."


The Terra Nova notes represent, as of the date of this prospectus and consent
solicitation statement, the only debt securities issued under the Terra Nova
indentures.

The description of the Terra Nova notes reflects the Terra Nova notes as
currently constituted and does not reflect any changes to the covenants and
other terms of the Terra Nova notes or the Terra Nova indentures that may be
effected following the consent solicitations as described under "The Proposed
Amendments."


--------------------------------------------------------------------------------



         The Terra Nova Notes                      The Markel Notes
                                     
--------------------------------------- ---------------------------------------
Limitation on Liens                     Limitation on Liens

The Terra Nova indentures provide that  The Markel indentures will provide that
Bermuda Holdings will not, and will not Markel may not, and may not permit, any
permit, any of its restricted           subsidiary to create, assume, incur or
subsidiaries, to directly or indirectly allow to exist any lien, other than a
create, incur, assume or allow to exist purchase money lien, on any capital
any lien securing indebtedness, as      stock of any restricted subsidiary of
defined in the Terra Nova indentures,   Markel to secure any obligation, as
other than permitted liens, on any      defined in the Markel indentures,
property or asset or on any related     without making provisions so that all
income or profits unless all payments   of the then outstanding Markel notes
under the applicable Terra Nova         will be directly secured equally and
indenture and the applicable Terra Nova ratably with that obligation. This
notes are secured on an equal and       restriction will not apply to any liens
ratable basis with, or prior to, the    existing on the date of the Markel
obligations so secured until those      indentures. In addition, this provision
obligations are no longer secured by a  will not restrict any other property of
lien.                                   Markel or its subsidiaries.



                                      27



--------------------------------------------------------------------------------



         The Terra Nova Notes                      The Markel Notes
                                     
--------------------------------------- ---------------------------------------

As used in the Terra Nova indentures,   As used in the Markel indentures, a
"permitted liens" means:                "purchase money lien" will mean:

..  liens securing indebtedness pursuant .  any mortgage, pledge, hypothecation,
   to any credit agreement that is         lien, encumbrance, charge or
   permitted by the terms of the           security interest on any capital
   applicable Terra Nova indenture;        stock of any restricted subsidiary
                                           acquired after the date of the
..  liens in favor of Bermuda Holdings      Markel indentures if the purchase
   or any restricted subsidiary;           money lien is for the purpose of
                                           financing, and does not exceed, the
..  specified liens on property existing    cost to Markel or its subsidiary of
   at the time an entity is merged into    acquiring the capital stock or
   or consolidated with Bermuda            property of that restricted
   Holdings or any of its restricted       subsidiary and the financing is
   subsidiaries;                           effected concurrently with, or
                                           within six months after, the date of
..  specified liens on property existing    that acquisition; and
   at the time of its acquisition;
                                        .  any extension, renewal or
..  specified liens to secure the           refinancing of any purchase money
   performance of statutory                lien so long as the principal amount
   obligations, surety or appeal bonds     of obligations secured thereby will
   or performance bonds, or landlords',    not exceed the original principal
   carriers', warehousemen's,              amount of obligations so secured at
   mechanics', suppliers',                 the time of that extension, renewal
   materialmen's or other like liens,      or refinancing.
   in any case incurred in the ordinary
   course of business;

..  liens existing on the date of the
   applicable Terra Nova indenture;

..  specified liens for taxes or
   governmental charges or claims that
   are not yet delinquent or that are
   being contested in good faith by
   appropriate proceedings;

..  specified liens with respect to
   obligations under currency
   agreements or interest swap
   obligations and other similar
   arrangements designed to protect
   Bermuda Holdings or any of its
   restricted subsidiaries against
   fluctuations in the value of
   investments;

..  liens incurred in the ordinary
   course of business of Bermuda
   Holdings or any of its subsidiaries
   with respect to obligations
   permitted under the applicable Terra
   Nova indenture that do not exceed
   $10.0 million in principal amount in
   the aggregate at any one time
   outstanding; and

..  specified liens on assets of
   unrestricted subsidiaries.



                                      28



--------------------------------------------------------------------------------



         The Terra Nova Notes                      The Markel Notes
                                     
--------------------------------------- ----------------------------------------

A "restricted subsidiary" means any     A "restricted subsidiary" will mean any
subsidiary other than an unrestricted   subsidiary of Markel that is a licensed
subsidiary.                             insurance company. On the date hereof,
                                        the restricted subsidiaries of Markel
An "unrestricted subsidiary" means any  are:
subsidiary that is designated by the
board of directors as an unrestricted   .  Associated International Insurance
subsidiary; but only if the subsidiary:    Company,

..  is designated an unrestricted        .  Compagnie de Reassurance
   subsidiary before formation;            d'Ile-de-France,

..  has total assets at the time of      .  Deerfield Insurance Company,
   formation with a fair market value,
   as defined in the Terra Nova         .  Essex Insurance Company,
   indentures, not exceeding $1,000;
                                        .  Evanston Insurance Company,

..  has no indebtedness other than non-  .  Markel American Insurance Company,
   recourse indebtedness, as defined in
   the Terra Nova indentures;           .  Markel Insurance Company,

..  is not party to any agreement or     .  Terra Nova (Bermuda) Insurance
   understanding with Bermuda Holdings     Company Ltd., and
   or any of its restricted
   subsidiaries unless the terms of the .  Terra Nova Insurance Company Limited.
   agreement or understanding are no
   less favorable to Bermuda Holdings   The Markel indentures will not prohibit
   or the restricted subsidiary than    the sale by Markel or any subsidiary of
   those that might be obtained at the  any capital stock, indebtedness or
   time from entities who are not       assets of any subsidiary, including any
   affiliates;                          restricted subsidiary.

..  is an entity with respect to which
   neither Bermuda Holdings nor any of
   its restricted subsidiaries has any
   direct or indirect obligation to
   subscribe for additional capital
   stock or to maintain or preserve the
   entity's financial condition or to
   cause the entity to achieve any
   specified levels of operating
   results; and

..  has not guaranteed or otherwise
   provided credit support for any
   indebtedness of Bermuda Holdings or
   any of its restricted subsidiaries.



                                      29



--------------------------------------------------------------------------------



         The Terra Nova Notes                      The Markel Notes
                                     
--------------------------------------- ---------------------------------------

Reports                                 Reports
Whether or not required by the Exchange Under the Markel indentures, Markel
Act, so long as any Terra Nova notes    will not covenant to provide reports or
are outstanding, Bermuda Holdings will  financial information.
furnish to the holders of Terra Nova
notes all financial information that
would be required to be contained in a
filing with the SEC on Form 10-K, 10-Q
or 8-K if Bermuda Holdings were
required to file such form, including:

..  a "Management's Discussion and
   Analysis of Results of Operations
   and Financial Condition," and

..  with respect to the annual financial
   statements only, a report thereon by
   Bermuda Holdings' independent public
   accountants.

In addition, whether or not required by
the Exchange Act, Bermuda Holdings will
file a copy of this information and
these reports with the SEC for public
availability, unless the SEC will not
accept such a filing, and Bermuda
Holdings will also make this
information available to investors and
some others who request it in writing.






                                      30



--------------------------------------------------------------------------------



                The Terra Nova Notes                                  The Markel Notes
                                                   
----------------------------------------------------- -------------------------------------------------
Merger, Consolidation or Sale of Assets               Merger, Consolidation or Sale of Assets

The Terra Nova indentures provide that                The Markel indentures will provide that
Bermuda Holdings will not consolidate with or         Markel will not, in any transaction,
merge with or into any other entity or, directly      consolidate with or merge with or into any
or indirectly, sell, or otherwise dispose of all or   other entity or, directly or indirectly, sell, or
substantially all of its assets in one or more        otherwise dispose of all or substantially all of
related transactions unless, at the time and after    its assets in one or more related transactions
giving effect thereto:                                unless, at the time and after giving effect
                                                      thereto:
.. Bermuda Holdings is the continuing
  corporation, or the surviving entity, if other      . Markel is the continuing corporation, or the
  than Bermuda Holdings, is a corporation               surviving entity, if other than Markel, is a
  organized and validly existing under the laws         corporation organized and validly existing
  of specified jurisdictions or any other               under the laws of any domestic or foreign
  jurisdiction that is not materially adverse to        jurisdiction and expressly assumes all the
  the holders of the Terra Nova notes and               obligations of Markel under the applicable
  expressly assumes all the obligations of              Markel indenture;
  Bermuda Holdings under the guarantee and
  the applicable Terra Nova indenture;                . immediately before and after the
                                                        transaction, giving effect to that
.. immediately before and after the transaction,         transaction, no default or event of default
  giving effect to that transaction, no default         under the applicable Markel indenture shall
  or event of default under the applicable Terra        have occurred and be continuing; and
  Nova indenture shall have occurred and be
  continuing;                                         . if any of the property or assets of Markel
                                                        would become subject to any lien, the
.. immediately after giving effect to the                outstanding Markel notes shall be secured
  transaction on a pro forma basis, the                 equally and ratably with, or prior to, the
  consolidated net worth of Bermuda Holdings            obligation or liability secured by that lien,
  or the surviving entity, if other than Bermuda        unless Markel could create that lien
  Holdings, is at least equal to the consolidated       without equally and ratably securing the
  net worth of Bermuda Holdings immediately             Markel notes.
  before the transaction;

.. if any of the property or assets of Bermuda
  Holdings would become subject to any lien,
  the outstanding Terra Nova notes shall be
  secured equally and ratably with, or prior to,
  the obligation or liability secured by that lien,
  unless Bermuda Holdings could create that
  lien without equally and ratably securing the
  Terra Nova notes; and

.. Bermuda Holdings or the surviving entity, if
  other than Bermuda Holdings, shall be
  entitled to all the benefits of the tax sharing
  agreement.





                                      31



--------------------------------------------------------------------------------



              The Terra Nova Notes                              The Markel Notes
                                                
-------------------------------------------------- --------------------------------------------
Payment of Additional Amounts                      Payment of Additional Amounts
If any deduction or withholding for taxes or       Under the Markel indentures, Markel will not
other governmental charges of the U.K.,            covenant to pay any additional amounts.
Bermuda or any relevant jurisdiction or any
political subdivision or taxing authority thereof,
referred to as a "relevant jurisdiction" is
required in respect of any amounts to be paid
under the Terra Nova notes or under the
guarantee, Terra Nova or Bermuda Holdings, as
applicable, will pay such additional amounts as
may be necessary so that the net amounts
received by a holder of a Terra Nova note after
the deduction or withholding will not be less
than the amounts specified in the Terra Nova
note to which the holder is entitled. However,
neither Terra Nova nor Bermuda Holdings is
required to make any payment of additional
amounts for:

.. any tax or other governmental charge which
  would not have been imposed but for:

..   the existence of any present or former
    connection between the holder, or
    between specified other parties, if the
    holder is an estate, nominee, trust,
    partnership or corporation, otherwise than
    merely by the holding of a Terra Nova note
    or the receipt of amounts payable in
    respect of the Terra Nova notes, and any
    relevant jurisdiction or the holder being
    subject to the jurisdiction of any relevant
    jurisdiction; or

..   the presentation of the Terra Nova note, if
    required, for payment on a date more than
    30 days after the date on which the
    payment became due and payable or the
    date on which payment thereof is duly
    provided for, whichever occurs later,
    except to the extent that the holder would
    have been entitled to additional amounts
    had the Terra Nova notes been presented
    on the last day of the period of 30 days;



                                      32



--------------------------------------------------------------------------------



               The Terra Nova Notes                               The Markel Notes
                                                
-------------------------------------------------- -----------------------------------------------

.. any tax or other governmental charge that is
  imposed or withheld because the holder does
  not provide information, documents or other
  evidence requested by Terra Nova concerning
  the nationality, residence, identity or
  connection with the taxing jurisdiction of the
  holder which is required as a precondition to
  exemption from all or part of that tax or
  governmental charge;

.. payments in respect of Terra Nova definitive
  notes issued at the request of the holder,
  including on or after the occurrence of an
  event of default; or

.. any combination of the foregoing.

Events of Default and Remedies                     Events of Default and Remedies

The Terra Nova indentures provide that each of     The following will be events of default under
the following will be events of default under      the Markel indentures with respect to the
the Terra Nova indentures:                         Markel notes:

.. default in the payment of interest on any        . failure to pay principal of or any premium
  Terra Nova note when the payment becomes           on the Markel notes when due; or
  due and payable and the continuance of the
  default for a period of 30 days; or              . failure to pay any interest on the Markel
                                                     notes when due, continued for 30 days; or
.. default in the payment of the principal of (or
  premium, if any, on) any Terra Nova note at      . failure to perform any covenant of Markel
  its maturity; or                                   in the applicable indenture continued for
                                                     60 days after written notice has been given
.. default in the performance of any covenant         by the trustee or the holders of at least
  of Terra Nova or Bermuda Holdings in the           25% in principal amount of the applicable
  applicable Terra Nova indenture, other than        outstanding Markel notes, as provided in
  the payment obligations specified above or         the Markel indentures; or
  the covenant with respect to mergers, and
  continuance of the default for a period of 60    . acceleration of any indebtedness for money
  days after written notice specifying the           borrowed by Markel having an aggregate
  default and stating that the notice is a           principal amount outstanding of at least
  "notice of default" has been given, by             $10 million if that indebtedness has not
  registered or certified mail, to Terra Nova or     been discharged or the acceleration has not
  Bermuda Holdings, by the trustee or to Terra       been rescinded or annulled within 10 days
  Nova or Bermuda Holdings and the trustee by        after written notice has been given by the
  the holders of at least 25% in principal           trustee, or the holders of at least 25% in
  amount of the outstanding applicable Terra         outstanding principal amount of the
  Nova notes; or                                     applicable Markel notes, as provided in the
                                                     Markel indentures; or



                                      33



--------------------------------------------------------------------------------



                     The Terra Nova Notes                The Markel Notes
                                                      
       ------------------------------------------------- ----------------
       . an event of default has occurred under the
         indebtedness of Bermuda Holdings or any
         restricted subsidiary for money borrowed, or
         the payment of which is guaranteed by
         Bermuda Holdings or any of its restricted
         subsidiaries, having an aggregate outstanding
         principal amount of not less than $10.0
         million, if the default has resulted in that
         indebtedness becoming due and payable
         prior to the date on which it would otherwise
         become due and payable, and the event has
         not been cured or rescinded or the
         indebtedness has not been satisfied within
         ten business days of the event; or

       . a default in any payment when due at final
         stated maturity of any indebtedness
         outstanding in an aggregate principal
         amount of not less than $10.0 million and the
         default has not been cured or the
         indebtedness has not been satisfied within
         ten business days; or

       . final judgments are rendered against
         Bermuda Holdings, Terra Nova or any
         restricted subsidiary which require the
         payment in money, either individually or in
         an aggregate amount, that is more than
         $10.0 million, other than any judgment to the
         extent a reputable non-affiliated insurance
         company has accepted liability, and the
         judgment or order is not discharged and
         either:

       .   any creditor has commenced an
           enforcement proceeding upon the
           judgment or order, which enforcement
           proceeding has remained unstayed for a
           period of 10 days; or

       .   a period of 60 days, during which a stay of
           enforcement has not been in effect, has
           elapsed following the date on which any
           period for appeal has expired; or




                                      34



--------------------------------------------------------------------------------



         The Terra Nova Notes                      The Markel Notes
                                     
--------------------------------------- ---------------------------------------
..  specified events of bankruptcy,      .  specified events of bankruptcy,
   insolvency or reorganization with       insolvency or reorganization with
   respect to Bermuda Holdings, Terra      respect to Markel or any of its
   Nova, any subsidiary of Bermuda         material subsidiaries.
   Holdings in existence on the date of
   the applicable Terra nova indenture
   or any other material subsidiary of
   Bermuda Holdings.


..  default in the performance, or
   breach, of the provisions described
   under "-- Merger, Consolidation or
   Sale of Assets."

Terra Nova is required, if a default
has occurred and is continuing or under
other circumstances, to deliver to the
Trustee a statement specifying the
default or other circumstance.

Corporate Existence                     Corporate Existence
Subject to the covenants with respect   Subject to the covenants with respect
to consolidation, merger and            to consolidation, merger and conveyance
consolidation discussed above, each of  discussed above, Markel will agree in
Terra Nova and Bermuda Holdings have    the Markel indentures to maintain its
agreed in the Terra Nova indentures to  corporate existence, corporate rights,
maintain its corporate existence and    corporate licenses and corporate
that of its subsidiaries, as well as    franchises. However, Markel will not be
the corporate rights, corporate         required to maintain its rights,
licenses and corporate franchises of    licenses or franchises if its board of
Terra Nova, Bermuda Holdings and their  directors determines that the
respective subsidiaries, except where   preservation thereof is no longer
failure to do so would not have a       desirable in the conduct of its
material adverse effect on Bermuda      business and that the loss thereof is
Holdings and its subsidiaries taken as  not disadvantageous in any material
a whole determined on a consolidated    respect to the holders of the
basis in accordance with generally      applicable notes.
accepted accounting principles.
However, none of Terra Nova, Bermuda
Holdings or their respective
subsidiaries is required to maintain
its existence (other than Bermuda
Holdings), rights, licenses or
franchises if its respective board of
directors determines that the
preservation thereof is no longer
desirable in the conduct of its
business and that the loss thereof is
not disadvantageous in any material
respect to the holders of the
applicable Terra Nova notes.



                                      35



--------------------------------------------------------------------------------



         The Terra Nova Notes                      The Markel Notes
--------------------------------------- ---------------------------------------
                                     
Payment of Taxes and Other Claims       Payment of Taxes and Other Claims
Under the Terra Nova indentures,        The Markel indenture will contain a
Bermuda Holdings covenants to pay or    comparable covenant except that the
discharge before the following becomes  Markel covenant will not require that
delinquent:                             Markel maintain reserves in connection
                                        with any tax, assessment, charge, or
..  all material taxes, assessments and  claim which is being contested in good
   governmental charges levied or       faith.
   imposed upon Bermuda Holdings or any
   subsidiary or upon the income,
   profits or property of Bermuda
   Holdings or any subsidiary; and

..  all lawful claims for labor,
   materials and supplies which, if
   unpaid, might by law become a lien
   upon the property of Bermuda
   Holdings or any subsidiary.
Bermuda Holdings is not required to pay
or discharge any tax, assessment charge
or claim which is being contested in
good faith by appropriate proceedings
and for which appropriate reserves are
being maintained in accordance with
generally accepted accounting
principles.


Meetings                                Meetings
The Terra Nova indentures do not        The Markel indentures will provide that
provide for noteholder meetings.        meetings of holders of Markel notes may
                                        be convened on notice:

                                        .  by the Markel trustee;

                                        .  by us, if we ask the Markel trustee
                                           to call a meeting and it fails to do
                                           so; or
                                        .  by the holders of 10% in principal
                                           amount of the Markel notes, if they
                                           ask the Markel trustee to call a
                                           meeting and it fails to do so.

                                        Holders entitled to vote a majority in
                                        principal amount of the Markel notes
                                        constitute a quorum at any meeting of
                                        holders.



                                      36



--------------------------------------------------------------------------------


         The Terra Nova Notes                      The Markel Notes
--------------------------------------- ---------------------------------------
                                     
Maintenance of Properties               Maintenance of Properties
In the Terra Nova indentures, Bermuda   In the Markel indentures, Markel will
Holdings agrees to cause all properties agree to cause all properties owned by
owned by or leased to it or its         or leased to it or its subsidiaries and
subsidiaries and used or useful in the  used or useful in the conduct of its
conduct of its business or the business business or the business of its
of its subsidiaries to be maintained    subsidiaries to be maintained and kept
and kept in normal condition, ordinary  in normal condition, ordinary wear and
wear and tear excepted. However,        tear excepted. However, nothing in the
nothing in the indenture prevents       Markel indentures will prevent Markel
Bermuda Holdings or its subsidiaries    or its subsidiaries from discontinuing
from discontinuing the use, operation   the use, operation or maintenance of
or maintenance of its properties or     its properties or disposing of them,
disposing of them, if, in the judgment  if, in the judgment of Markel's board
of Bermuda Holdings' board of directors of directors or the board of the
or the board of the applicable          applicable subsidiary, or of any
subsidiary, or of any officer having    officer having managerial
managerial responsibility for the       responsibility for the applicable
applicable property, this action is     property, this action is desirable in
desirable in the conduct of the         the conduct of the business of Markel
business of Bermuda Holdings or any of  or any of its subsidiaries.
its subsidiaries and the discontinuance
or disposal is not adverse in any
material respect to the holders of the
applicable Terra Nova notes.

Other Covenants                         Other Covenants
The Terra Nova indentures also provide: There will be no comparable covenants
                                        in the Markel indentures.
..  Bermuda Holdings and its
   subsidiaries will carry insurance
   against loss or damage of the kinds
   customarily insured against by
   similarly situated corporations;

..  Bermuda Holdings and its
   subsidiaries will keep proper and
   true books of record and account;

..  Bermuda Holdings and its
   subsidiaries will comply with all
   applicable statutes and regulations
   except where a failure to do so is
   not likely to have a material
   adverse effect on the business
   prospects, assets or condition or
   results of operation of Bermuda
   Holdings and its subsidiaries taken
   as a whole; and

..  Terra Nova and Bermuda Holdings
   waive, to the extent they may
   lawfully do so, any stay, extension
   or usury law affecting the covenants
   or performance of the Terra Nova
   indentures or the execution of any
   power granted to the trustee.




                                      37




                            THE PROPOSED AMENDMENTS



Markel is soliciting the consent of the holders of Terra Nova notes to:


        .  eliminate some covenants in the Terra Nova indentures,


        .  eliminate restrictions on Bermuda Holdings' ability to consolidate,
           merge or sell all or substantially all of its assets, and


        .  eliminate some events of default under the Terra Nova indentures.


You are urged to read the forms of supplemental indentures that have been filed
as exhibits to the registration statement of which this prospectus and consent
solicitation statement forms a part for a complete understanding of the
provisions of the Terra Nova indentures to be eliminated. The forms of
supplemental indentures are available from the Information Agent upon request.
See "Where You Can Find More Information" for information as to how you can
obtain a copy of the Terra Nova indentures, the forms of supplemental
indentures and the Markel indentures from the SEC.



Provisions of the Terra Nova Indentures to be Deleted


Markel is proposing to delete the following covenants from the Terra Nova
indentures:

..  The covenant in Section 9.2 entitled "Corporate Existence," which is
   described above under "Description of Differences Between the Terra Nova
   Notes and the Markel Notes--Corporate Existence."


..  The covenant in Section 9.3 entitled "Payment of Taxes and Other Claims."
   Under Section 9.3, Bermuda Holdings covenants to pay or discharge, before
   the same becomes delinquent:


  .  all material taxes, assessments and governmental charges levied or imposed
     upon Terra Nova or any subsidiary or upon the income, profits or property
     of Bermuda Holdings or any subsidiary, and


  .  all lawful claims for labor, materials and supplies which, if unpaid,
     might by law become a lien upon the property of Bermuda Holdings or any
     subsidiary.



..  The covenants in Sections 9.4 under the title "Maintenance of Properties;
   Insurance; Books and Records; Compliance with Law," which are described
   above under "Description of Differences Between the Terra Nova Notes and the
   Markel Notes--Maintenance of Properties" and the first three paragraphs of
   "Description of Differences Between the Terra Nova Notes and the Markel
   Notes--Other Covenants."



..  The covenant in Section 9.8 entitled "Liens," which is described above under
   "Description of Differences Between the Terra Nova Notes and the Markel
   Notes-- Limitation on Liens."



..  The covenant in Section 9.18(b) under the title "Statement as to Compliance;
   Notice of Default; Provision of Financial Statements." Under Section
   9.18(b), Terra Nova must deliver to the Trustee a certificate specifying any
   default that has occurred and is continuing or any notice given or action
   taken by a trustee for or holder of any indebtedness of Terra Nova or
   Bermuda Holdings, other than indebtedness in the aggregate principal of less
   than $5,000,000, with respect to a claimed default within five days of its
   occurrence.


                                      38




..  The covenants in Section 9.18(c) and (d) under the title "Statement as to
   Compliance; Notice of Default; Provision of Financial Statements," which are
   described above under "Description of Differences Between the Terra Nova
   Notes and the Markel Notes--Reports."



..  The covenant in Section 9.19 entitled "Waiver of Stay, Extension of Usury
   Laws," which is described above under the last paragraph of "Description of
   Differences Between the Terra Nova Notes and the Markel Notes--Other
   Covenants."



..  The covenants in Section 7.1 and 7.2 entitled "Bermuda Holdings May
   Consolidate, etc., Only on Certain Terms" and "Successor Substituted,"
   respectively, which is described above under "Description of Differences
   Between the Terra Nova Notes and the Markel Notes--Merger, Consolidation or
   Sale of Assets."


In conjunction with the deletion of the covenants identified above, Markel is
proposing to delete the following defined terms in the indenture, which are
used only in those covenants or in other defined terms being deleted:
"Permitted Liens", "Restricted Subsidiary"; and "Wholly-owned Restricted
Subsidiary."


The section references are to the Terra Nova 7.2% notes indenture. The Terra
Nova 7.0% notes indenture uses a different numbering convention with a zero
inserted for all sections below ten (that is, Section 7.1 in the Terra Nova
7.2% notes indenture would be Section 7.01 in the Terra Nova 7.0% notes
indenture).



Markel is also requesting a waiver with respect to any default, event of
default or other consequence under the Terra Nova indentures of failing to
comply with the terms of the covenants identified above (whether before or
after the date of the supplemental indentures) and to delete clauses (d), (e),
(f), (g) and (h) from the definition of "Event of Default" in Section 4.1,
"Events of Default." These clauses provide, respectively, that each of the
following constitutes an "event of default":


..  a default in any payment when due at final stated maturity of any
   indebtedness outstanding in an aggregate principal amount of not less than
   $10.0 million and the default has not been cured or the indebtedness has not
   been satisfied within ten business days; or


..  final judgments are rendered against Bermuda Holdings, Terra Nova or any
   restricted subsidiary which require the payment in money, either
   individually or in an aggregate amount, that is more than $10.0 million,
   other than any judgment to the extent a reputable non-affiliated insurance
   company has accepted liability, and the judgment or order is not discharged
   and either:


  .  any creditor has commenced an enforcement proceeding upon the judgment or
     order, which enforcement proceeding has remained unstayed for a period of
     10 days, or


  .  a period of 60 days, during which a stay of enforcement has not been in
     effect, has elapsed following the date on which any period for appeal has
     expired;



..  Terra Nova, Bermuda Holdings or any principal insurance subsidiary
   institutes a voluntary case or proceeding under applicable bankruptcy or
   similar law, or Terra Nova, Bermuda Holdings or any principal insurance
   subsidiary files a petition or answer or consent seeking reorganization or
   relief under applicable bankruptcy or similar law, or Terra Nova, Bermuda
   Holdings or any principal insurance subsidiary consents to the entry of a
   decree or order for relief in any involuntary case or proceeding under
   applicable bankruptcy law, or consents to the filing of


                                      39




  any such petition or to the appointment of or taking possession by a
  custodian or other similar official of any of Terra Nova, Bermuda Holdings or
  any principal insurance subsidiary or of any substantial part of its
  property, or makes an assignment for the benefit of creditors, or admits in
  writing its inability to pay its debts generally as they become due or takes
  corporate action in furtherance of any such action; or



..  a default in the performance of or breach of the provisions of the Terra
   Nova indentures relating to merger, consolidation or sale of assets.


                                      40




                         CERTAIN RELATED TRANSACTIONS


At December 31, 2001, Terra Nova had outstanding interest free short-term
borrowings of $54.8 million due to Markel.

Effective January 1, 2001, Terra Nova entered into a quota share reinsurance
agreement with certain United States insurance subsidiaries of Markel. Under
the quota share reinsurance agreement, Terra Nova's subsidiary, Markel Capital
Limited, cedes 24% of 2001 year of account net written premiums and related
losses and expenses to these subsidiaries. For the year ended December 31,
2001, Terra Nova ceded premiums totaling $71.3 million.

A subsidiary of Markel provides administrative support services to Terra Nova.
Markel charges Terra Nova a proportional share of its administrative costs
based on estimates of the percentage of work the individual Markel departments
perform for Terra Nova. In the opinion of management, Terra Nova is being
charged for all costs incurred on its behalf by Markel under a comprehensive
and reasonable cost allocation method.


As of April 15, 2002, Markel or its subsidiaries held approximately $2.0
million in total principal amount of the 7.2% Terra Nova notes and $2.5 million
in total principal amount of the 7.0% Terra Nova notes. The Terra Nova notes
held by Markel or its subsidiaries will not be deemed outstanding for
determining the amount required for consent to the amendments to the Terra Nova
indentures.


                                      41




                        DESCRIPTION OF THE MARKEL NOTES



If the exchange offers are consummated, the Markel notes to be issued in
exchange for the Terra Nova notes will be issued under indentures with JPMorgan
Chase Bank as trustee, which we refer to as the "Markel trustee." The Markel
indentures will for purposes of the following description of the Markel notes,
be referred to as the "Markel indentures." The Markel notes will be issued only
in book-entry form in denominations of $1,000 and integral multiples of $1,000.


The following summary of some of the provisions of the Markel indentures does
not purport to be complete and is subject to, and is qualified in its entirety
by reference to the Trust Indenture Act of 1939, and to all of the provisions
of the Markel indentures, including the definitions of terms in the Markel
indentures. The Markel indentures are subject to and governed by the Trust
Indenture Act.

Copies of the Markel indentures may be obtained from the information agent and
are also filed as exhibits to the registration statement of which this
prospectus and consent solicitation statement is a part. See "Where You Can
Find More Information" for information as to how you can obtain copies of the
Markel indentures from the SEC.

Principal, Maturity and Interest

The Markel 7.0% notes will be limited in an aggregate principal amount to
$100.0 million. The Markel 7.0% notes will mature on May 15, 2008. Interest on
the Markel 7.0% notes will accrue at the rate of 7% per annum and will be
payable semi-annually in arrears in cash on each November 15 and May 15,
commencing on November 15, 2002, to holders of record on the immediately
preceding November 1 and May 1, respectively. Each Markel 7.0% note will bear
interest from the last date to which interest has been paid on the Terra Nova
7% notes.

The Markel 7.2% notes will be limited in an aggregate principal amount to $75.0
million. The Markel 7.2% notes will mature on August 15, 2007. Interest on the
Markel 7.2% notes will accrue at the rate of 7.2% per annum and will be payable
semi-annually in arrears in cash on each February 15 and August 15, commencing
on August 15, 2002, to holders of record on the immediately preceding January
31 and July 31, respectively. Each Markel 7.2% note will bear interest from the
last date to which interest has been paid on the Terra Nova 7.2% notes.

Ranking; Additional Debt

The Markel notes will be our unsecured obligations. The Markel notes will rank
senior in right of payment to all subordinated indebtedness of Markel and
equally in right of payment with all indebtedness of Markel not expressly
subordinated or secured. The Markel indentures will not limit the amount of
debt that we or any of our subsidiaries may incur or issue, nor will they
restrict transactions between us and our affiliates or dividends and other
distributions by us or our subsidiaries.

Because Markel is a holding company that conducts all of its operations through
its subsidiaries, its ability to meet its obligations under the Markel notes is
dependent on the earnings and cash flows of those subsidiaries and the ability
of those subsidiaries to pay dividends or to advance or repay funds to Markel.
Payment of dividends or advances from Markel's insurance subsidiaries

                                      42



may require prior regulatory notice or approval. Holders of Markel notes will
generally have a junior position to claims of creditors of Markel's
subsidiaries, including any holders of Terra Nova notes not validly tendered
and accepted in the exchange offers. As of March 31, 2002, the aggregate amount
of outstanding long-term debt of Markel's subsidiaries to which holders of the
Markel notes would have been structurally subordinated was approximately $170.5
million, all of which consists of both series of Terra Nova notes for which
Markel is making the exchange offers less the amount of Terra Nova notes held
by Markel and its subsidiaries. See "Risk Factors --Risks Relating to the
Exchange Offers and Consent Solicitation Statement--Our holding company
structure results in substantial structural subordination and may affect our
ability to make payments on the Markel notes."

Optional Redemption

Markel will have the right to redeem the Markel notes, in whole or in part, at
any time, at a redemption price equal to:


..  the sum of the principal amount of the Markel notes being redeemed, plus
   accrued and unpaid interest; and


..  the excess, if any, of (i) the sum, as determined by a quotation agent, of
   the present values of the principal amount of the Markel notes, together
   with scheduled payments of interest from the redemption date to the stated
   maturity of the Markel notes, in each case discounted to the redemption date
   on a semi-annual basis, assuming a 360-day year consisting of twelve 30-day
   months at the adjusted treasury rate over (ii) 100% of the principal amount
   of the Markel notes to be redeemed.

The quotation agent means the reference treasury dealer appointed by Markel.
The term reference treasury dealer means a primary treasury dealer selected by
Markel and its respective successors and two other primary treasury dealers
selected by the primary treasury dealer selected by Markel and any other
primary treasury dealer selected by the Markel trustee after consultation with
Markel. If however, either of the reference treasury dealers selected by the
primary treasury dealer selected by Markel ceases to be a primary U.S.
government securities dealer in New York City, the primary treasury dealer
selected by Markel will substitute another primary treasury dealer unless that
dealer has ceased to be a primary treasury dealer, in which case Markel shall
substitute another primary treasury dealer.

A reference treasury dealer quotations means, with respect to each reference
treasury dealer and any redemption date, the average, as determined by the
Quotation Agent, of the bid and asked prices for the comparable treasury issue,
expressed in each case as a percentage of its principal amount, furnished to
the Markel trustee on the third business day preceding the redemption date.

The "adjusted treasury rate" means, for any redemption date, the rate per annum
equal to the semi-annual equivalent yield to maturity of the comparable
treasury issue, calculated using a price for the comparable treasury issue,
expressed as a percentage of its principal amount, equal to the comparable
treasury price for that redemption date, calculated on the third business day
preceding the redemption date, plus in each case 0.20%. "Comparable treasury
issue" means the United States Treasury security selected by the quotation
agent as having a maturity comparable to the remaining term of the Markel notes
that would be used, at the time of selection and in

                                      43



accordance with customary financial practice, in pricing new issues of
corporate debt securities of comparable maturity to the remaining term of the
Markel notes.

The "comparable treasury price" means for any redemption date:


..  the average of the bid and asked prices for the comparable treasury issue,
   expressed as a percentage of its principal amount, on the third business day
   before the redemption date, as set forth in the daily statistical release,
   or any successor release, published by the Federal Reserve Bank of New York
   and designated "Composite 3:30 p.m. Quotations for U.S. Government
   Securities;" or


..  if that release or any successor release, is not published or does not
   contain those prices on that business day, the average of the reference
   treasury dealer quotations for that redemption date, after excluding the
   highest and lowest reference treasury dealer quotations, or if the quotation
   agent obtains fewer than three reference treasury dealer quotations, the
   average of all the quotations.

Notice of any redemption will be mailed at least 30 days but not more than 60
days before the redemption date to each holder of Markel notes to be redeemed
at its registered address. Unless Markel defaults in payment of the redemption
price, on and after the redemption date interest ceases to accrue on such
Markel notes called for redemption.

Markel may purchase Markel notes at any price in the open market or otherwise.
Notes so purchased by Markel may, at Markel's discretion, be held or resold or
surrendered to the Markel trustee for cancellation.

Limitation on Liens


The Markel indentures will provide that Markel will not, and will not permit
any of its subsidiaries to create, incur or suffer to exist any lien, other
than a purchase money lien, upon any capital stock of any restricted subsidiary
to secure any obligation of Markel, any subsidiary or other person, without
making effective provision for all of the outstanding Markel notes to be
directly secured on an equal and ratable basis with the obligations; provided,
however, that the foregoing restriction will not apply to liens existing as of
the date of the Markel indentures.


Merger, Consolidation or Sale of Assets

The Markel indentures will provide that Markel will not, consolidate with or
merge with or into any other person or, directly or indirectly, sell, or
otherwise dispose of all or substantially all of its assets in one or more
related transactions to any person unless at the time:

..  Markel will be the continuing corporation, or the person formed by that
   consolidation or merger, or the person that acquires by sale or other
   disposition the assets of Markel, substantially as an entirety, is a
   corporation duly organized and validly existing under the laws of any
   domestic or foreign jurisdiction and, if any person other than Markel,
   expressly assumes, by supplemental indenture, in form reasonably
   satisfactory to the Markel trustee, all the obligations of Markel under the
   applicable Markel indenture;

..  immediately before and after that transaction, giving effect to that
   transaction, no default or event of default occurred and is continuing;

                                      44



..  if any of the property or assets of Markel would thereupon become subject to
   any lien, the outstanding Markel notes shall be secured equally and ratably
   with (or prior to) the obligation or liability secured by that lien, unless
   Markel could create that lien without equally and ratably securing the
   Markel notes; and

..  Markel delivers to the Markel trustee an officers' certificate and an
   opinion of counsel, each stating that the consolidation, merger, transfer or
   lease and the supplemental indenture, if any, complies with the applicable
   Markel indenture and that all conditions precedent provided for in the
   applicable Markel indenture relating to that transaction have been complied
   with.

Upon any consolidation or merger or any sale, assignment, transfer, lease or
conveyance or other disposition of all or substantially all of the assets of
Markel in accordance with the provisions described above, the successor person
formed by that consolidation or into which Markel is merged or to whom that
sale, assignment, conveyance, transfer, lease or other disposition is made will
succeed to, and be substituted for, and may exercise every right and power of
Markel under the applicable Markel indenture with the same effect as if that
successor person had been named as Markel in the applicable Markel indenture.
When a successor assumes all the obligations of its predecessor under the
Markel indenture and the Markel notes, the predecessor will be released from
those obligations; provided that, in the case of a transfer by lease, the
predecessor corporation will not be released from the payment of principal and
interest on the Markel notes.

Events of Default and Remedies

The Markel indentures will provide that each of the following constitutes an
event of default:


..  default in the payment of interest on the applicable Markel notes for a
   period of 30 days after the payment becomes due and payable; or



..  default in the payment of the principal of, or premium, if any, on, the
   applicable Markel notes at its maturity; or



..  default in the performance, or breach, of any covenant or agreement of
   Markel under the applicable Markel indenture (other than a default in the
   performance, or breach, of a covenant or agreement that is specifically
   dealt with in the immediately preceding two paragraphs), for a period of 60
   days after there has been given, by registered or certified mail, to Markel
   by the Markel trustee or to Markel and the Markel trustee by the holders of
   at least 25% in principal amount of the applicable outstanding Markel notes,
   a written notice specifying the default or breach and stating that the
   notice is a "notice of default" under the applicable Markel indenture; or



..  An event of default shall have occurred under any mortgage, bond, indenture,
   loan agreement or other document evidencing any issue of indebtedness of
   Markel which issue has an aggregate outstanding principal amount of not less
   than $10.0 million, and that default results in that indebtedness becoming
   due and payable prior to the date on which it would otherwise become due and
   payable, or a default in any payment when due at final stated maturity of
   any indebtedness outstanding in an aggregate principal amount of not less
   than $10.0 million and, in each case, within 10 days after notice has been
   given, by registered or certified mail, to Markel by the Markel trustee, or
   to Markel and the Markel trustee by the Holders of at least 25% in aggregate
   principal amount of all of the applicable Markel notes at


                                      45



  the time outstanding; provided that if that indebtedness shall be remedied or
  cured by Markel or waived by the holders of that indebtedness, then:


 .  the event of default under the applicable Markel indenture by reason
    thereof shall be deemed likewise to have been thereupon remedied, cured or
    waived without further action on the part of either the Markel trustee or
    any holders of the applicable Markel notes; and



 .  any acceleration of the principal of the applicable Markel notes will be
    rescinded without further action on the part of either the Markel trustee
    or any holders of the Markel notes; or


..  a decree or order is entered by a court having jurisdiction:


 .  for relief in respect of Markel or any material subsidiary in an
    involuntary case or proceeding under the Federal Bankruptcy Code or any
    other federal or state bankruptcy, insolvency, reorganization or similar
    law; or



 .  adjudging Markel or any material subsidiary bankrupt or insolvent, or
    seeking reorganization, arrangement, adjustment or composition of or in
    respect of Markel or any material subsidiary under the Federal Bankruptcy
    Code or any other applicable federal or state law, or appointing a
    custodian, receiver, liquidator, assignee, trustee, sequestrator (or other
    similar official) of Markel or any material subsidiary or of any
    substantial part of any of their properties, or ordering the winding up or
    liquidation of any of their affairs, and any such decree or order remains
    unstayed and in effect for a period of 60 consecutive days; or


..  Markel or any material subsidiary institutes a voluntary case or proceeding
   under the Federal Bankruptcy Code or any other applicable federal or state
   law or any other case or proceedings to be adjudicated bankrupt or
   insolvent, or Markel or any material subsidiary consents to the entry of a
   decree or order for relief in respect of Markel or any material subsidiary
   in any involuntary case or proceeding under the Federal Bankruptcy Code or
   any other applicable federal or state law or to the institution of
   bankruptcy or insolvency proceedings against Markel or any material
   subsidiary files a petition or answer or consent seeking reorganization or
   relief under the Federal Bankruptcy Code or any other applicable federal or
   state law, or consents to the filing of any such petition or to the
   appointment of or taking possession by a custodian, receiver, liquidator,
   assignee, trustee, sequestrator (or other similar official) of any of Markel
   or any material subsidiary or of any substantial part of its property, or
   makes an assignment for the benefit of creditors, or admits in writing its
   inability to pay its debts generally as they become due or takes corporate
   action in furtherance of any such action.


If any event of default (other than an event of default described in the
immediately preceding two paragraphs above) occurs and is continuing, the
Markel trustee or the holders of at least 25% in principal amount of the
applicable outstanding Markel notes, by written notice to Markel (and to the
Markel trustee, if that notice is given by the holders), may, and the Markel
trustee at the request of those holders must, declare all unpaid principal of,
premium, if any, and accrued interest on all the applicable Markel notes to be
due and payable immediately. In the case of an event of default described in
the last two paragraphs above, all outstanding Markel notes will become due and
payable without further action or notice. Holders of the Markel notes may not
enforce the applicable Markel indenture or the Markel notes except as provided
in the applicable Markel indenture. Subject to some limitations, holders of a
majority in principal amount of the then applicable outstanding Markel notes
may direct the Markel trustee in its exercise of any trust or power. The Markel
trustee may withhold from holders of the applicable Markel notes


                                      46



notice of any continuing default or event of default (except a default or event
of default relating to the payment of principal, any premium or interest) if
the board of directors, the executive committee or a trust committee of
directors or responsible officers of the Markel trustee determine in good faith
that withholding the notice is in the interest of the holders.

A "material subsidiary" is, at any date, any consolidated subsidiary of Markel
whole total assets after excluding intercompany accounts, are in excess of 10%
of the total assets of Markel and its consolidated subsidiaries, with any
determination being made as at the end of the most recently completed fiscal
year for which consolidated financial statements have been prepared except to
the extent that on that date the principal financial officers of Markel have
actual reason to know to the contrary.


After a declaration of acceleration, but before a judgment or decree for
payment of the money due has been obtained by the Markel trustee, the holders
of at least a majority in aggregate principal amount of the applicable
outstanding Markel notes, by written notice to Markel and the Markel trustee,
may annul such declaration if Markel has paid or deposited with the Markel
trustee a sum sufficient to pay:



..  all sums paid or advanced by the Markel trustee under the applicable Markel
   indenture and the reasonable compensation, expenses, disbursements and
   advances of the Markel trustee, its agents and counsel;



..  all overdue interest on all applicable Markel notes;



..  the principal of and premium, if any, on any applicable Markel notes which
   have become due otherwise than by that declaration of acceleration and
   interest thereon at the rate born by the Markel notes; and



..  to the extent that payment of the interest is lawful, interest upon overdue
   interest at the rate of the applicable Markel notes;



and all events of default, other than the non-payment of principal of the
applicable Markel notes which have become due solely by the declaration or
acceleration, have been waived as provided in the applicable Markel indenture
or cured. No such rescission will affect any subsequent default or impair any
right.



The holders of a majority in aggregate principal amount of the applicable
outstanding Markel notes by notice to the Markel trustee may on the behalf of
the holders of all of the applicable Markel notes waive any existing or past
default or event of default and its consequences under the applicable Markel
indenture except a continuing default or event of default in the payment of
interest on, or the principal of, or premium, if any, on the applicable Markel
notes or in respect of covenants or provisions in the applicable Markel
indenture which cannot be modified or amended without the consent of the
holders of a greater percentage of the principal amount of, or all of, the
applicable outstanding Markel notes.



Markel will be required to deliver to the Markel trustee annually a statement
regarding compliance with the applicable Markel indenture.


                                      47



No Personal Liability of Directors, Officers, Employees and Stockholders


No director, officer, employee or stockholder of Markel or any subsidiary of
Markel, will have any liability for any obligations of Markel under the Markel
notes or the Markel indentures or for any claim based on those obligations or
their creation. Each holder of the Markel notes by accepting a Markel note will
waive and release all such liability. The waiver and release will be part of
the consideration for issuance of the Markel notes. That waiver may not be
effective to waive liabilities under the federal securities laws, and it is the
view of the SEC that some waivers are against public policy.


Defeasance or Covenant Defeasance

Under some conditions, Markel may elect to have its obligations discharged with
respect to the outstanding Markel notes. This defeasance means that Markel will
be deemed to have paid and discharged the entire indebtedness represented by
the outstanding Markel notes, except for:

..  the rights of holders of outstanding Markel notes to receive payments in
   respect of the principal of, premium, if any, and interest on the Markel
   notes when those payments are due, or on the redemption date, as the case
   may be;

..  Markel's obligations with respect to the Markel notes concerning issuing
   temporary Markel notes, registration of Markel notes, mutilated, destroyed,
   lost or stolen Markel notes and the maintenance of an office or agency for
   payment and money for security payments held in trust;

..  the rights, powers, trust, duties and immunities of the Markel trustee, and
   Markel's related obligations;

..  the defeasance provisions of the applicable Markel indenture.

In addition, under some conditions, Markel may elect to have its obligations
released with respect to some covenants that are described in the Markel
indentures and thereafter any omission to comply with those obligations will
not constitute a default or an event of default with respect to the Markel
notes. In the event covenant defeasance occurs, some events (not including
non-payment, bankruptcy, receivership, rehabilitation and insolvency events)
described under "--Events of Default and Remedies" will no longer constitute an
event of default with respect to the Markel notes.

In order to exercise either defeasance or covenant defeasance:

..  Markel must irrevocably deposit with the Markel trustee, in trust, for the
   benefit of the holders of the applicable Markel notes, cash in U.S. dollars,
   U.S. Government Obligations, or a combination thereof, in amounts that will
   be sufficient, in the opinion of a nationally recognized firm of independent
   public accountants, to pay the principal of, premium, if any, and interest
   on the applicable outstanding Markel notes;

                                      48



..  in the case of defeasance, Markel must deliver to the Markel trustee an
   opinion of counsel in the United States reasonably acceptable to the Markel
   trustee confirming that Markel has received from, or there has been
   published by, the Internal Revenue Service a ruling; or since the date of
   the applicable Markel indenture, there has been a change in the applicable
   federal income tax law, in either case to the effect that, confirmed by an
   opinion of counsel, the holders of the applicable outstanding Markel notes
   will not recognize income, gain or loss for federal income tax purposes as a
   result of defeasance and will be subject to federal income tax on the same
   amounts, in the same manner and at the same times as would have been the
   case if defeasance had not occurred;


..  in the case of covenant defeasance, Markel must deliver to the Markel
   trustee an opinion of counsel in the United States reasonably acceptable to
   the Markel trustee confirming that the holders of the applicable outstanding
   Markel notes will not recognize income, gain or loss for federal income tax
   purposes as a result of covenant defeasance and will be subject to federal
   income tax on the same amounts, in the same manner and at the same times as
   would have been the case if such covenant defeasance had not occurred;


..  no default or event of default may have occurred and be continuing on the
   date of the deposit or insofar as events of default from bankruptcy or
   insolvency events are concerned, at any time in the period ending on the
   91st day after the date of deposit;


..  the defeasance or covenant defeasance will not result in a breach or
   violation of, or constitute a default under the applicable Markel indenture,
   or any other material agreement or instrument to which Markel is bound;


..  Markel must deliver to the Markel trustee an opinion of counsel to the
   effect that after the 91st day following the deposit, the trust funds will
   not be subject to the effect of any applicable bankruptcy, insolvency,
   reorganization or similar laws affecting creditors' rights generally;


..  Markel must deliver to the Markel trustee an officers' certificate stating
   that the deposit was not made by Markel with the intent of preferring the
   holders of applicable Markel notes over the other creditors of Markel or
   with the intent of defeating, hindering, delaying or defrauding creditors of
   Markel or others; and


..  Markel must deliver to the Markel trustee an officers' certificate and an
   opinion of counsel, each stating that all conditions relating to either the
   defeasance or the covenant defeasance, as the case may be, have been
   complied with.

Amendment, Supplement and Waiver


The Markel indentures will provide that the consent of holders of a majority in
outstanding aggregate principal amount of the applicable Markel notes will be
required with respect to amendments which do not affect the payment terms of
the Markel notes or the amount of Markel notes whose holders must consent to
any amendment or the relative ranking of the Markel notes. The latter
amendments may only be made with the consent of each holder of the applicable
Markel notes affected thereby.


                                      49



With the consent of the holders of not less than a majority in principal amount
of the applicable outstanding Markel notes (including consents obtained in
connection with a tender offer or exchange offer for the Markel notes), Markel
when authorized by a board resolution, and the Markel trustee may enter into
one or more supplemental indentures for the purpose of adding any provisions to
or changing in any manner the rights of the holders under the applicable Markel
indenture or of waiving or modifying in any manner the rights of the holders
under the applicable Markel indenture; provided, however, that no supplemental
indenture, amendment or waiver will without the consent of the holder of each
outstanding Markel note affected thereby:

..  change the stated maturity or the principal of, or any installment of
   interest on, any Markel note or reduce the principal amount of or the rate
   of interest on the Markel notes or any provisions relating to the redemption
   price of the Markel notes or the periods during which redemption may be
   effected, or change the coin or currency in which the principal of any
   Markel note or any premium or the interest is payable, or impair the right
   to institute suit for the enforcement of any payment after the stated
   maturity (or, in the case of redemption, on or after the redemption date); or

..  reduce the percentage in principal amount of the outstanding Markel notes,
   the consent of whose holders is required for any supplemental indenture or
   the consent of whose holders is required for any waiver (of compliance with
   provisions of the applicable Markel indenture or defaults and their
   consequences) provided for in the applicable Markel indenture; or

..  modify any of the provisions of the applicable Markel indenture relating to
   amendments or waivers of payment or covenant defaults, except to increase
   any percentage or to provide that other provisions of the applicable Markel
   indenture cannot be modified or waived without the consent of the holder of
   each Markel note affected.

Without the consent of any holder of Markel notes, Markel and the Markel
trustee may amend or supplement the Markel indenture or the Markel notes:

..  to cure any ambiguity or to correct any provision in the applicable Markel
   indenture which may be defective or inconsistent with any other provision
   therein; or

..  to provide for the assumption of Markel's obligations under the Markel notes
   in the case of a merger or consolidation; or

..  to secure the Markel notes pursuant to the requirements of the provisions
   described under "--Merger, Consolidation or Sale of Assets" or "--Liens," or
   otherwise; or

..  to comply with the requirements of the SEC in order to maintain the
   qualification of the applicable Markel indenture under the Trust Indenture
   Act; or

..  to evidence and provide the acceptance of the appointment of a successor
   trustee; or

..  to make any other change that would provide any additional rights or
   benefits to the holders or that does not adversely affect the legal rights
   of any holder under the applicable Markel indenture or the Markel notes.

                                      50



Concerning the Trustee


JPMorgan Chase Bank is the trustee under the Terra Nova indentures and will be
the trustee under the Markel indentures. Markel may borrow money and maintain
other banking relationships, in the ordinary course of business, with the
trustee and its affiliates. JPMorgan Chase Bank also serves as trustee under
other indentures pursuant to which securities of Markel are outstanding. The
Markel indentures will, however, contain limitations on the right of the
trustee, if it becomes one of our creditors, to obtain payment of claims or to
realize on property received for any claim, as security or otherwise. If the
trustee acquires any conflicting interest, it must eliminate that conflict or
resign.



J.P. Morgan Securities Inc., the dealer manager, is an affiliate of JPMorgan
Chase Bank, the trustee.


The Markel indentures will contain limitations on the rights of the Markel
trustee, should it become a creditor of Markel, to obtain payment of claims in
some cases or to realize on property received in respect of those claims as
security or otherwise. The Markel trustee will be permitted to engage in other
transactions; however, if it acquires any conflicting interest it must
eliminate that conflict within 90 days, apply to the SEC for permission to
continue or resign.

The holders of a majority in principal amount of the applicable outstanding
Markel notes will have the right to direct the time, method and place of
conducting any proceeding for exercising any remedy available to the Markel
trustee, subject to some exceptions. The Markel indentures will provide that in
case an event of default occurs (which is not cured), the Markel trustee will
be required, in the exercise of its power, to use the degree of care of a
prudent man in the conduct of his own affairs. Subject to those provisions, the
Markel trustee will be under no obligation to exercise any of its rights or
powers under the Markel indentures at the request of any holder of Markel
notes, unless that holder has offered to the Markel trustee security and
indemnity satisfactory to it against any loss, liability or expense.

Book-Entry System

The Markel notes will be represented by one or more global securities. A global
security is a special type of indirectly held security. Each global security
will be deposited with, or on behalf of, The Depository Trust Company or "DTC"
and be registered in the name of a nominee of DTC. Except under the
circumstances described below, the Markel notes will not be issued in
definitive form in the name of individual holders.

Upon the issuance of a global security, DTC will credit on its book-entry
registration and transfer system the accounts of persons designated by the
exchange agent with the respective principal amounts of the Markel notes
represented by the global security. Ownership of beneficial interests in a
global security will be limited to DTC participants (that is, persons that have
accounts with DTC or its nominee) or persons that may hold interests through
DTC participants. Ownership of beneficial interests in a global security will
be shown on, and the transfer of that ownership will be effected only through,
records maintained by DTC or its nominee (except with respect to persons that
are themselves DTC participants).

                                      51



So long as DTC or its nominee is the registered owner of a global security, DTC
or the nominee will be considered the sole owner or holder of the Markel notes
represented by that global security under the applicable Markel indenture.
Except as described below, owners of beneficial interests in a global security
will not be entitled to have Markel notes represented by that global security
registered in their names, will not receive or be entitled to receive physical
delivery of Markel notes in definitive form and will not be considered the
owners or holders of the Markel notes under the Markel indentures. Principal
and interest payments on Markel notes registered in the name of DTC or its
nominee will be made to DTC or the nominee, as the registered owner. Neither
Markel, the Markel trustee, any paying agent or the registrar for the Markel
notes will have any responsibility or liability for any aspect of the records
relating to or payments made on account of beneficial interests in a global
security or for maintaining, supervising or reviewing any records relating to
such beneficial interests. The laws of some states require that some purchasers
of securities take physical delivery of securities in definitive form. Those
limits and laws may impair the ability to transfer beneficial interests in a
global security.

We expect that DTC or its nominee, upon receipt of any payment of principal or
interest, will credit immediately the participants' accounts with payments in
amounts proportionate to their beneficial interests in the principal amount of
the relevant global security as shown on the records of DTC or its nominee. We
also expect that payments by participants to owners of beneficial interests in
a global security held through those participants will be governed by standing
instructions and customary practices, as is the case with securities held for
the accounts of customers in bearer form or registered in "street name," and
will be the responsibility of those participants.

If DTC is at any time unwilling or unable to continue as a depositary and a
successor depositary is not appointed by us within 90 days, we will issue the
Markel notes in definitive form in exchange for the entire global security for
the Markel notes. In addition, we may at any time choose not to have the Markel
notes represented by a global security and will then issue the Markel notes in
definitive form in exchange for the entire global security relating to the
Markel notes. In any such instance, an owner of a beneficial interest in a
global security will be entitled to physical delivery in definitive form of the
Markel notes represented by the global security equal in principal amount to
that beneficial interest and to have the Markel notes registered in its name.
Markel notes so issued in definitive form will be issued as registered Markel
notes in denominations of $1,000 and integral multiples thereof, unless
otherwise specified by us.

Transfer and Exchange

Markel has appointed the Markel trustee as security registrar for the Markel
notes. Markel will be required to maintain an office or agency for transfers
and exchanges in each place of payment. Markel may at any time designate
additional transfer agents for the Markel notes or rescind the designation of
any transfer agent.

In the case of any redemption of the Markel notes, Markel will not be required:


..  to issue, register the transfer of, or exchange the Markel notes during a
   period beginning 15 days before the day of mailing of the relevant notice of
   redemption and ending on the close of business on the day of mailing of the
   relevant notice of redemption; or


                                      52



..  to register the transfer or exchange of a Markel note, or portion of a note,
   selected for redemption, except for the unredeemed portion of any Markel
   note we are redeeming in part.

Meetings

Meetings of holders of Markel notes may be convened on notice:


..  by the Markel trustee;



..  by us, if we ask the Markel trustee to call a meeting and it fails to do so;
   or


..  by the holders of 10% in principal amount of the Markel notes, if they ask
   the Markel trustee to call a meeting and it fails to do so.

Holders entitled to vote a majority in principal amount of the Markel notes
constitute a quorum at any meeting of holders. Except for actions requiring the
consent of all holders of the applicable Markel notes affected by the action,
any action at a meeting adopted by the holders of a majority in principal
amount of the applicable Markel notes (or a lesser percentage required for the
action by the applicable Markel indenture) will be binding on all holders of
the applicable Markel notes.

Notices

Notices to holders of the Markel notes will be given by mail to the holder's
address as it appears in the security register.

Governing Law

New York law will govern the Markel indentures and the Markel notes.

                                      53




                 MATERIAL U.S. FEDERAL INCOME TAX CONSEQUENCES


The following is a discussion of:


..  the material U.S. federal income tax considerations relating to the exchange
   offers and consent solicitations and to the ownership and disposition of the
   Markel notes by initial holders of those securities who are U.S. holders, as
   described below, and



..  the material U.S. federal income and estate tax considerations relating to
   the exchange offers and consent solicitations and to the ownership and
   disposition of the Markel notes by initial holders of those securities who
   are non-U.S. holders, as described below.


This discussion only addresses tax considerations relevant to holders that hold
Terra Nova notes, and will hold Markel notes, as capital assets.

This discussion does not address all tax considerations that may be important
to you in light of your particular circumstances (such as the alternative
minimum tax provisions) or under certain special rules. Special rules may
apply, for instance, to:

..  banks,

..  tax-exempt organizations,

..  insurance companies,

..  dealers in securities or currencies,

..  persons who hold Terra Nova notes or Markel notes as part of a hedge,
   conversion or constructive sale transaction, or straddle or other risk
   reduction transaction,

..  traders in securities that elect to use a mark-to-market method of
   accounting for their securities holdings,

..  persons whose functional currency for tax purposes is not the U.S. dollar, or

..  persons who have ceased to be United States citizens or to be taxed as
   resident aliens.


This discussion is limited to holders of Markel notes who acquire such
securities in connection with the exchange offers. This discussion also does
not address the tax consequences arising under the laws of any foreign, state
or local jurisdiction.


This discussion is based upon the Internal Revenue Code of 1986, as amended
(which we refer to as the Internal Revenue Code), its legislative history,
existing and proposed U.S. Treasury regulations, and judicial decisions and
administrative interpretations thereunder, as of the date hereof, all of which
are subject to change or different interpretations, possibly with retroactive
effect. We cannot assure you that the Internal Revenue Service will not
challenge one or more of the tax results described herein, and we have not
obtained, nor do we intend to obtain, a ruling from the Internal Revenue
Service with respect to the U.S. federal tax consequences of the exchange
offers and consent solicitations and of the ownership and disposition of the
Markel notes.

   Please consult your own tax advisors as to the particular tax consequences
   to you of the exchange offers and consent solicitations and of the ownership
   and disposition of the Markel notes, including the effect and applicability
   of state, local or foreign tax laws.

                                      54



U.S. Holders

You are a U.S. holder for purposes of this discussion if you are a beneficial
owner of Terra Nova notes or Markel notes that is, for U.S. federal income tax
law purposes:

..  a citizen or resident of the United States,

..  a corporation organized in or under the laws of the United States or of any
   political subdivision thereof,

..  an estate the income of which is subject to U.S. federal income taxation
   regardless of its source, or

..  a trust if a U.S. court can exercise primary supervision over the trust's
   administration and one or more U.S. persons are authorized to control all
   substantial decisions of the trust.

In the case of a holder of Terra Nova notes or Markel notes which is a
partnership, the tax consequences will generally affect the partner rather than
the partnership, but special considerations not here set forth may apply.

Exchange Offers


The exchange of Terra Nova notes for Markel notes pursuant to the exchange
offers will be a taxable transaction for U.S. federal income tax purposes.
Accordingly, if you tender your Terra Nova notes, you will generally recognize
gain or loss equal to the difference between the amount realized by you on the
exchange and your adjusted basis in the Terra Nova notes. The amount realized
by you on the exchange will be the issue price, as defined below, of the Markel
notes which you receive; based on the position that Markel intends to take with
regard to the consent payments, such payments would also be included in your
amount realized. See "Consent Payments". Your gain or loss will generally be
capital gain or loss except for gain attributable to accrued market discount,
if any. In addition, you will recognize ordinary interest income on the amount
of accrued and unpaid interest on the Terra Nova notes which you have not
previously included in income.


If the Markel notes are publicly traded, within the meaning of the applicable
U.S. Treasury regulations, or the Markel notes are not publicly traded but the
Terra Nova notes are publicly traded, the issue price of the Markel notes will
be the fair market value of such publicly traded notes reduced by the amount of
pre-issuance accrued interest on the Markel notes. We believe that the
requisite public trading will exist and intend to take this position for all
relevant reporting and other purposes. Moreover, we intend to reduce the issue
price of the Markel notes by the amount of pre-issuance accrued interest on
such notes, and you should also compute the issue price in such manner. See
"--Taxation of Interest."

Consent Payments

The proper treatment of the consent payments is unclear. However, we intend to
take the position that the payments will represent additional consideration
received by you in exchange for your Terra Nova notes. You should consult your
own tax advisor as to possible alternative treatments of the consent payments.

                                      55



Taxation of Interest

Generally, you will be required to include interest received on a Markel note
as ordinary income at the time it accrues or is received, in accordance with
your regular method of accounting for U.S. federal income tax purposes.
However, Markel intends to treat, and you should also treat, a portion of the
interest paid on the first payment date as a return of pre-issuance accrued
interest that is not taxable and is not income.

Discount or Premium

If the face amount of any Markel note exceeds the issue price of the note
(other than by an amount qualifying for a de minimis exception), the excess
will constitute original issue discount. You must include this original issue
discount in income as ordinary income as it accrues on the basis of a constant
yield to maturity, regardless of the receipt of cash representing that income.
Your basis in the Markel notes will be increased by the amount of original
issue discount includible in your gross income as it accrues. The excess will
qualify for a de minimis exception if it is less than 0.25% of the face amount
of a note, multiplied by the number of complete years to maturity. Because we
intend to determine the issue price of a note by reference to the fair market
value of either the Terra Nova notes or the Markel notes on the exchange date,
we cannot know before the exchange date whether any Markel note will have
original issue discount. Recent estimates by Markel and Terra Nova indicate
that, if the fair market value of the Markel notes and Terra Nova notes were
the same on the date of the exchange as on the date when the estimates were
made, there would be original issue discount on both Markel notes.

If the issue price of a Markel note were to exceed its face amount, you would
be considered to have purchased that security with "amortizable bond premium"
equal in amount to such excess. You would be able to elect to amortize that
premium by offsetting against the interest otherwise required to be included in
income in respect of that security during any taxable year the allocable
portion of that premium, determined under the constant yield method over the
remaining term. In such a case, your basis in the security would be reduced by
the amount of bond premium offset against interest.

The rules concerning discounts and premiums are complex, and you should consult
your tax advisor to determine how, and to what extent, any discount or premium
will be included in your income (in the case of any discount) or amortized (in
the case of any premium), and as to the desirability, mechanics and
consequences of making any elections in connection therewith.

Sale, Exchange or Retirement of the Markel Notes


With some exceptions, upon the sale, exchange or retirement of a Markel note,
you will recognize gain or loss equal to the difference between the sale or
redemption proceeds and your adjusted tax basis in that security. Your adjusted
tax basis in a Markel note will generally equal your cost for that security,
which is the issue price, increased by any accrued original issue discount or
decreased by any amortized premium applied to reduce interest on your note
during your holding period of the note. Gain or loss realized on the sale,
exchange or retirement of a Markel note (except for certain payments of accrued
interest--see below) will generally be capital gain or loss and will be
long-term capital gain or loss if that security is held for more than one year.
You are urged to consult your tax advisors regarding the treatment of capital
gains (which may be taxed at lower rates than ordinary income for individual
and certain other non-


                                      56




corporate taxpayers) and losses (the deductibility of which is subject to
limitations). Payments for accrued interest not previously included in income
will be treated as ordinary interest income.


Non U.S. Holders

You generally are a non-U.S. holder for purposes of this discussion if you are
a beneficial owner of Terra Nova notes or Markel notes that is not a U.S.
holder, as described above.

Exchange Offers

You generally will not be subject to U.S. federal income and withholding tax on
gain realized on the exchange of Terra Nova notes for Markel notes pursuant to
the exchange offers unless:


..  you are an individual present in the United States for 183 days or more in
   the year of such exchange and either:



 .  you have a "tax home" in the United States and certain other requirements
    are met,


 .  the gain from the exchange is attributable to an office or other fixed
    place of business maintained by you in the United States, or

..  the gain is effectively connected with your conduct of a U.S. trade or
   business. See "--Income Effectively Connected with U.S. Trade or Business."

However, to the extent that disposition proceeds represent interest on the
Terra Nova notes accruing between interest payment dates, you will be required
to establish an exemption from United States federal income tax. See
"--Taxation of Interest" for a discussion of the requirements of the exemption.

Consent Payments

The proper treatment of the consent payments is unclear. We intend to take the
position that the consent payments are additional consideration in exchange for
the Terra Nova notes and therefore would be taken into account in determining
the amount of gain or loss on the exchange as described above. You are urged to
consult your own tax advisor on this matter, including possible treatment of
the consent payments that could result in their being subject to U.S. taxation
at a 30% rate, or lower treaty rate, if applicable.

Taxation of Interest

The payment of interest on a Markel note by us or any paying agent of ours to
you will not be subject to U.S. federal income and withholding tax, provided
that the interest is not effectively connected with a U.S. trade or business of
yours and:

..  you do not actually or constructively own 10% or more of the total combined
   voting power of all classes of our shares,

..  you are not a controlled foreign corporation that is related to us within
   the meaning of the Internal Revenue Code, and


..  the U.S. payor does not have actual knowledge or reason to know that you are
   a U.S. person and either:


                                      57



 .  the beneficial owner of the Markel note certifies to the applicable payor
    or its agent, under penalties of perjury, that it is not a U.S. holder and
    provides its name and address on IRS Form W-8BEN, or a suitable substitute
    form or


 .  a securities clearing organization, bank or other financial institution,
    that holds customers' securities in the ordinary course of its trade or
    business (a "financial institution") and holds the Markel note, certifies
    under penalties of perjury that a Form W-8BEN (or a suitable substitute
    form) has been received from the beneficial owner by it or by a financial
    institution between it and the beneficial owner and furnishes the payor
    with a copy of the form or the U.S. payor otherwise possesses documentation
    upon which it may rely to treat the payment as made to a non-U.S. person in
    accordance with U.S. Treasury regulations.


If that interest is effectively connected with a U.S. trade or business of
yours, see "--Income Effectively Connected with U.S. Trade or Business."

Payments made to a non-U.S. holder which are attributable to original issue
discount will generally be treated in the same manner as payments of interest,
as just described.

A portion of the first payment of stated interest made by us on the Markel
notes will represent pre-issuance interest in the amount of interest on the
Terra Nova notes which was accrued and unpaid on the date of the exchange. This
payment will be treated as a payment by us and subject to the same U.S. federal
withholding tax rules and exemptions applicable to interest payments, as
described above.

Gain on Disposition of the Markel Notes

You generally will not be subject to U.S. federal income and withholding tax on
gain realized on the sale, exchange or redemption of a Markel note unless:


..  you are an individual present in the United States for 183 days or more in
   the year of such sale, exchange or redemption and either:



 .  you have a "tax home" in the United States and other requirements are met,


 .  the gain from the disposition is attributable to an office or other fixed
    place of business maintained by you in the United States, or

..  the gain is effectively connected with your conduct of a U.S. trade or
   business. See "--Income Effectively Connected with U.S. Trade or Business."

However, to the extent that disposition proceeds represent either interest
accruing between interest payment dates or original issue discount accruing
while you held the Markel note, you may be required to establish an exemption
from United States federal income and withholding tax. See "--Taxation of
Interest."

Income Effectively Connected with U.S. Trade or Business

Except to the extent otherwise provided under an applicable tax treaty, you
generally will be taxed in the same manner as a U.S. holder with respect to
income or gain on a Markel note or Terra Nova note if such income or gain is
effectively connected with a U.S. trade or business of yours. Effectively
connected income received or gain realized by a corporate non-U.S. holder may

                                      58



also, under certain circumstances, be subject to an additional "branch profits
tax" at a 30% rate (or, if applicable, a lower treaty rate), subject to certain
adjustments. This effectively connected income or gain will not be subject to
withholding tax if the holder delivers the appropriate form, currently IRS Form
W-8ECI, to the payor.

U.S. Federal Estate Tax

A Markel note held by an individual who at the time of death is not a citizen
or resident of the United States, as specially defined for U.S. federal estate
tax purposes, will not be subject to U.S. federal estate tax if:

..  the individual did not own 10% of Markel's voting stock at the time of
   death, and

..  the income on the Markel note was not connected to a United States business
   of the individual at the time of death.

Backup Withholding and Information Reporting

U.S. Holders

Consent payments and interest payments made on, or the proceeds of the sale or
other disposition of, the Terra Nova notes or Markel notes may be subject to
information reporting and U.S. federal backup withholding tax (currently at the
rate of 30%) if the recipient of those payments fails to supply an accurate
taxpayer identification number or otherwise fails to comply with applicable
United States information reporting or certification requirements. Any amount
withheld from a payment to a U.S. holder under the backup withholding rules is
allowable as a credit against the holder's federal income tax, provided that
the required information is furnished to the IRS.

Non-U.S. Holders


In general, backup withholding and information reporting will not apply to
consent payments and interest payments made on, or the proceeds of the sale or
other disposition of, the Terra Nova notes or Markel notes if the holder
establishes by providing a certificate or, in some cases, by providing other
evidence, that the holder is not a U.S. person. Additional exemptions are
available for certain payments made outside the United States. Non-U.S. holders
of Terra Nova notes or Markel notes are urged to consult their tax advisors
regarding the application of information reporting and backup withholding in
their particular situations, the availability of exemptions, and the procedure
for obtaining such an exemption, if available. Any amount withheld from a
payment to a non-U.S. holder under the backup withholding rules will be
allowable as a credit against the holder's U.S. federal income tax, provided
that the required information is furnished to the IRS.


Holders Not Tendering in an Exchange Offer

Although the matter is not entirely free from doubt, if you do not elect to
exchange your Terra Nova notes for Markel notes pursuant to the exchange
offers, the proposed modifications to the Terra Nova notes should not be
treated as a taxable exchange of the Terra Nova notes for new Terra Nova notes.
See "The Proposed Amendments."

                                      59




                               VALIDITY OF NOTES



Certain legal matters in connection with the Markel notes offered in the
exchange offers will be passed upon for us by McGuireWoods LLP, Richmond,
Virginia. Leslie A. Grandis, a partner in McGuireWoods LLP, is Secretary and a
member of the Board of Directors of Markel. As of April 11, 2002, partners of
McGuireWoods LLP owned 20,631 of our common shares, or less than 1% of our
common shares outstanding on that date. The validity of the Markel notes
offered in the exchange offers will be passed upon for the dealer manager by
Sullivan & Cromwell, New York, New York. Sullivan & Cromwell may rely as to
certain matters on the opinion of McGuireWoods LLP.



                                    EXPERTS


The consolidated financial statements of Markel Corporation and subsidiaries as
of December 31, 2001 and 2000 and for each of the years in the three-year
period ended December 31, 2001 have been incorporated by reference herein in
reliance upon the report of KPMG LLP, independent accountants, incorporated by
reference herein, and upon the authority of that firm as experts in accounting
and auditing.

The consolidated financial statements and schedules of Terra Nova (Bermuda)
Holdings Ltd. and subsidiaries as of December 31, 2001 and 2000 and for each of
the years in the two-year period ended December 31, 2001 have been incorporated
by reference herein in reliance upon the report of KPMG Audit plc, independent
accountants, incorporated by reference herein, and upon the authority of that
firm as experts in accounting and auditing.

The consolidated financial statements and schedules of Terra Nova (Bermuda)
Holdings Ltd. and subsidiaries for the year ended December 31, 1999 have been
incorporated by reference herein in reliance upon the report of
PricewaterhouseCoopers, independent accountants, incorporated by reference
herein, and upon the authority of that firm as experts in accounting and
auditing.

                                      60




In order to tender, a holder of Terra Nova notes should send or deliver a
properly completed and signed letter of transmittal and consent and any other
required documents to the exchange agent at its address set forth below or
tender pursuant to DTC's Automated Tender Offer Program.


   The exchange agent for the exchange offers and consent solicitations is:


                              JPMorgan Chase Bank





          By Mail:                 By Hand:           By Overnight Delivery:
     JPMorgan Chase Bank      JPMorgan Chase Bank      JPMorgan Chase Bank
                                               
       55 Water Street          55 Water Street          55 Water Street
   Room 234, North Building Room 234, North Building Room 234, North Building
      New York, NY 10041       New York, NY 10041       New York, NY 10041
   Attention: Victor Matis  Attention: Victor Matis  Attention: Victor Matis




                   By Facsimile Transmission: (212) 638-7875

                       (For Eligible Institutions only)


             Confirm facsimile by telephone only:  (212) 638-0459


Any questions or requests for assistance or for additional copies of this
prospectus and consent solicitation statement, the letter of transmittal and
consent or related documents may be directed to the information agent at the
telephone numbers listed below. You may also contact the dealer manager at
their telephone number set forth below or your custodian bank, depositary,
broker, trust company or other nominee for assistance concerning the exchange
offers and consent solicitations.

  The information agent for the exchange offers and consent solicitations is:


                           MacKenzie Partners, Inc.


                              105 Madison Avenue


                              New York, NY 10016




                        U.S. Toll Free: (800) 322-2885


             From Outside the U.S.: (212) 929-5500 (call collect)



The exclusive dealer manager for the exchange offers and consent solicitations
                                      is:


                                   JPMorgan

                          270 Park Avenue, 8th Floor

                              New York, NY 10017

                        U.S. Toll Free: (866) 834-4666


                     From Outside the U.S.: (212) 834-4388





                                     PART II

                   Information Not Required In The Prospectus

Item 20.  Indemnification of Directors And Officers.

     Virginia law provides that, unless limited by its articles of
incorporation, a corporation shall indemnify a director or officer who entirely
prevails in the defense of any proceeding to which he was a party because he is
or was a director or officer of the corporation against reasonable expenses
incurred by him in connection with the proceeding.

     Virginia law permits a corporation to indemnify, after a determination has
been made that indemnification of the director is permissible in the
circumstances because he has met the following standard of conduct, an
individual made a party to a proceeding because he is or was a director against
liability incurred in the proceeding if:

     .    he conducted himself in good faith;

     .    he believed in the case of conduct in his official capacity with the
          corporation, that his conduct was in its best interests and in all
          other cases that his conduct was at least not opposed to its best
          interests; and

     .    in the case of any criminal proceeding, he had no reasonable cause to
          believe his conduct was unlawful.

     A Virginia corporation, however, may not indemnify a director in connection
with a proceeding by or in the right of the corporation in which the director
was adjudged liable to the corporation or in connection with any other
proceeding charging improper personal benefit to him, whether or not involving
action in his official capacity, in which he was adjudged liable on the basis
that personal benefit was improperly received by him.

     In addition, Virginia law permits a corporation to make any further
indemnify, including indemnity with respect to a proceeding by or in the right
of the corporation, and to make additional provision for advances and
reimbursement of expenses, to any director, officer, employee or agent that may
be authorized by the articles of incorporation or any bylaw made by the
shareholders or any resolution adopted by the shareholders, except an indemnity
against his willful misconduct or a knowing violation of the criminal law.

     Our Articles of Incorporation provide mandatory indemnification of officers
and directors to the full extent permitted by Virginia law.

     We maintain directors' and officers' liability insurance which may provide
indemnification, including indemnification against liabilities under the
Securities Act of 1933 as amended, to our officers and directors in certain
circumstances.

                                      II-1



Limitations on Director Liability

     Virginia law provides that a director is not liable to the corporation, its
shareholders, or any person asserting rights on behalf of the corporation or its
shareholders for liabilities arising from a breach of, or failure to perform,
any duty resulting solely from his or her status as director, unless the person
asserting liability proves that the breach or failure to perform was in
violation of the director's duty to discharge his duties as a director,
including his duties as a member of a committee, in accordance with his good
faith business judgment of the best interests of the corporation, provided, that
the director, unless he has knowledge or information concerning the matter in
question that makes reliance unwarranted, is entitled to rely on information,
opinions, reports or statements, including financial statements and other
financial data, if prepared or presented by:

     .    one or more officers or employees of the corporation whom the director
          believes, in good faith, to be reliable and competent in the matters
          presented;

     .    legal counsel, public accountants, or other persons as to matters the
          director believes, in good faith, are within the person's professional
          or expert competence; or

     .    a committee of the board of directors of which he is not a member if
          the director believes, in good faith, that the committee merits
          confidence.

     In addition, Virginia law provides that in any proceeding brought by or in
the right of a corporation or brought by or on behalf of shareholders of the
corporation, the damages assessed against an officer or director arising out of
a single transaction, occurrence or course of conduct shall not exceed the
lesser of:

     .    the monetary amount, including the elimination of liability, specified
          in the articles of incorporation or, if approved by the shareholders,
          in the bylaws; or

     .    the greater of $100,000 or the amount of cash compensation received by
          the officer or director from the corporation during the twelve months
          immediately preceding the act or omission for which liability was
          imposed.

     Our articles of incorporation provide for the elimination of liability of
officers and directors in every instance permitted under Virginia law. The
liability of an officer or director is not limited if the officer or director
engaged in willful misconduct or a knowing violation of the criminal law or of
any federal or state securities law, including any claim of unlawful insider
trading or manipulation of the market for any security.

Item 16.  Exhibits And Financial Statement Schedules.

     The following instruments and documents are included as Exhibits to this
Registration Statement. Exhibits incorporated by reference are indicated below.

                                      II-2



NO.                               DESCRIPTION OF EXHIBITS
---                               -----------------------

**1.1          Form of Dealer Manager Agreement between Markel Corporation and
               J.P. Morgan Securities Inc.

3.1            Amended and Restated Articles of Incorporation of Markel
               Corporation (incorporated by reference to Exhibit 3(i) of
               Markel's Quarterly Report on Form 10-Q for the quarterly period
               ended March 31, 2000)

3.2            Bylaws of Markel Corporation (incorporated by reference to
               Exhibit 4.2 of Markel's Registration Statement on Form S-4 filed
               as of October 7, 1999 (Registration No. 333-88609))

4.1            Indenture, dated August 26, 1997, among Terra Nova Insurance (UK)
               Holdings Plc ("Terra Nova"), Terra Nova Bermuda Holdings Ltd.
               ("Bermuda Holdings"), and The Chase Manhattan Bank, as Trustee.
               (Filed as Exhibit 4.1 to the Terra Nova's Registration Statement
               on Form F-4/S-4, Registration No. 333-38063 and incorporated
               herein by reference)

4.2            Indenture, dated May 18, 1998, among Terra Nova, Bermuda
               Holdings, The Chase Manhattan Bank, as Trustee. (Filed as Exhibit
               4.2 to the Terra Nova's Registration Statement on Form F-4/S-4,
               Registration No. 333-53999 and incorporated herein by reference)

*4.10          Form of Indenture between Markel Corporation and The Chase
               Manhattan Bank, as trustee, relating to the 7.2% Notes

*4.11          Form of Indenture between Markel Corporation and The Chase
               Manhattan Bank, as trustee, relating to the 7.0% Notes

*4.12          Form of First Supplemental Indenture, among Terra Nova, Bermuda
               Holdings, The Chase Manhattan Bank, as Trustee, amending the
               Indenture dated August 26, 1997

*4.13          Form of First Supplemental Indenture, among Terra Nova, Bermuda
               Holdings, The Chase Manhattan Bank, as Trustee, amending the
               Indenture dated May 18, 1998

*5.1           Opinion of McGuireWoods LLP regarding the legality of the
               securities

*8.1           Opinion of McGuireWoods LLP regarding material U.S. federal
               income tax consequences

*12.1          Markel statement of computation of ratio of earnings to fixed
               charges

                                      II-3







 *12.2       Bermuda Holdings statement of computation of ratio of earnings to
             fixed charges

 *23.1       Consent of KPMG LLP

 *23.2       Consent of KPMG Audit plc

 *23.3       Consent of PricewaterhouseCoopers LLP

 *23.4       Consent of McGuireWoods LLP (included in Exhibits 5.1 and 8.1)

 *24         Powers of Attorney

 *25.1       Statement of Eligibility and Qualification under the Trust
             Indenture Act of 1939 of The Chase Manhattan Bank, as trustee

**99.1       Form of Letter of Transmittal



**99.2       Form of Letter to Depository Trust Company Participants



**99.3       Form of Letter to Beneficial Owners



__________________________________

** Filed herewith.
*  Previously filed.


(B)  FINANCIAL STATEMENT SCHEDULES

     Not applicable.

ITEM 22.  UNDERTAKINGS.

     (a)  The undersigned registrant hereby undertakes:

         (1) To file, during any period in which offers or sales are being made,
a post-effective amendment to the registration statement:

               (i)  To include any prospectus required by Section 10(a)(3) of
                    the Securities Act of 1933;

               (ii) To reflect in the prospectus any facts or events arising
                    after the effective date of the registration statement (or
                    the most recent post-effective amendment thereof) which,
                    individually or in the aggregate, represent a fundamental
                    change in the information set forth in the registration
                    statement. Notwithstanding the foregoing, any increase or
                    decrease in volume of securities offered (if the total
                    dollar value of securities offered would not exceed that
                    which was registered) and any deviation from the low or high
                    end of the estimated maximum offering range may be reflected
                    in the form of prospectus filed with the Commission pursuant
                    to Rule 424(b) if, in the aggregate, the changes in volume
                    and price represent no more than a 20 percent change in the
                    maximum aggregate offering price set forth in the
                    "Calculation of Registration Fee" table in the effective
                    registration

                                      II-4



                         statement; and

                  (iii)  To include any material information with respect to the
                         plan of distribution not previously disclosed in the
                         registration statement or any material change to such
                         information in the registration statement.

             (2)  That, for the purpose of determining any liability under the
Securities Act of 1933, each such post-effective amendment shall be deemed to be
a new registration statement relating to the securities offered therein, and the
offering of such securities at that time shall be deemed to be the initial bona
fide offering thereof.

             (3)  To remove from registration by means of a post-effective
amendment any of the securities being registered that remain unsold at the
termination of the offering.

     (b)  The undersigned Registrant hereby undertakes that, for purposes of
determining any liability under the Securities Act, each filing of the
Registrant's annual report pursuant to section 13(a) or section 15(d) of the
Exchange Act (and, where applicable, each filing of an employee benefit plan's
annual report pursuant to section 15(d) of the Exchange Act) that is
incorporated by reference in the Registration Statement shall be deemed to be a
new registration statement relating to the securities offered therein, and the
offering of such securities at that time shall be deemed to be the initial bona
fide offering thereof.

     (c)  Insofar as indemnification for liabilities arising under the
Securities Act may be permitted to directors, officers and controlling persons
of the Registrant pursuant to the foregoing provisions, or otherwise, the
Registrant has been advised that, in the opinion of the Securities and Exchange
Commission, such indemnification is against public policy as expressed in the
Securities Act and is, therefore, unenforceable. In the event that a claim for
indemnification against such liabilities (other than the payment by the
Registrant of expenses incurred or paid by a director, officer or controlling
person of the Registrant in the successful defense of any action, suit or
proceeding) is asserted by such director, officer or controlling person in
connection with the securities being registered, the Registrant will, unless, in
the opinion of its counsel, the matter has been settled by controlling
precedent, submit to a court of appropriate jurisdiction the question whether
such indemnification by it is against public policy as expressed in the
Securities Act and will be governed by the final adjudication of such issue.

     (d)  The undersigned Registrant hereby undertakes to respond to requests
for information that is incorporated by reference into the Prospectus pursuant
to Items 4, 10(b), 11, or 13 of this Form, within one business day of receipt of
such request, and to send the incorporated documents by first class mail or
other equally prompt means. This includes information contained in documents
filed subsequent to the effective date of the Registration Statement through the
date of responding to the request.

     (e)  The undersigned Registrant hereby undertakes to supply by means of a
post-effective amendment all information concerning a transaction, and the
company being acquired involved therein, that was not the subject of and
included in the Registration Statement when it became effective.

                                      II-5



                                   SIGNATURES

     Pursuant to the requirements of the Securities Act of 1933, Markel
Corporation certifies that it has reasonable ground to believe that it meets all
of the requirements for filing on Form S-4 and has duly caused this amendment
to the Registration Statement to be signed on its behalf by the undersigned,
thereunto duly authorized, in the City of Richmond, State of Virginia, on
April 22, 2002.

                               MARKEL CORPORATION


                               By: /s/ DARRELL D. MARTIN
                                   --------------------------
                                       Darrell D. Martin

                               Title:  Executive Vice President
                                       and Chief Financial Officer
                                       (Principal Financial Officer,
                                       Principal Accounting Officer)


Pursuant to the requirements of the Securities Act of 1933, this amendment
to the registration statement has been signed by the following persons
in the capacities and on the dates indicated.




            Signature                                           Title                                   Date
------------------------------------        -------------------------------------------------    -----------------
                                         
/s/ ALAN I. KIRSHNER*                       Director, Chairman and Chief Executive                 April 22, 2002
------------------------------------        Officer  (Principal Executive Officer)
Alan I. Kirshner

/s/ ANTHONY F. MARKEL*                      President, Director                                    April 22, 2002
------------------------------------
Anthony F. Markel

/s/ STEVEN A. MARKEL*                       Vice-Chairman, Director                                April 22, 2002
------------------------------------
Steven A. Markel

/s/ DARRELL D. MARTIN*                      Director, Executive Vice President and                 April 22, 2002
------------------------------------        Chief Financial Officer (Principal Financial
Darrell D. Martin                           Officer, Principal Accounting Officer)

/s/ MARK J. BYRNE*                          Director                                               April 22, 2002
------------------------------------
Mark J. Byrne

/s/ DOUGLAS C. EBY*                         Director                                               April 22, 2002
------------------------------------
Douglas C. Eby

/s/ LESLIE A. GRANDIS*                      Director                                               April 22, 2002
------------------------------------
Leslie A. Grandis


                                      II-6





 
/s/ STEWART M. KASEN*                            Director                              April 22, 2002
--------------------------------------------
Stewart M. Kasen

/s/ GARY L. MARKEL*                              Director                              April 22, 2002
--------------------------------------------
Gary L. Markel

/s/ THOMAS S. GAYNER*                            Director                              April 22, 2002
--------------------------------------------
Thomas S. Gayner


*By: /s/ GREGORY B. NEVERS
     ---------------------------------------
       Gregory B. Nevers
       Attorney-in-fact

                                      II-7




Exhibit Index

NO.                                  DESCRIPTION OF EXHIBITS
---                                  -----------------------

**1.1               Form of Dealer Manager Agreement between Markel Corporation
                    and J.P. Morgan Securities Inc.

3.1                 Amended and Restated Articles of Incorporation of Markel
                    Corporation (incorporated by reference to Exhibit 3(i) of
                    Markel's Quarterly Report on Form 10-Q for the quarterly
                    period ended March 31, 2000)

3.2                 Bylaws of Markel Corporation (incorporated by reference to
                    Exhibit 4.2 of Markel's Registration Statement on Form S-4
                    filed as of October 7, 1999 (Registration No. 333-88609))

4.1                 Indenture, dated August 26, 1997, among Terra Nova Insurance
                    (UK) Holdings Plc ("Terra Nova"), Terra Nova Bermuda
                    Holdings Ltd. ("Bermuda Holdings"), and The Chase Manhattan
                    Bank, as Trustee. (Filed as Exhibit 4.1 to the Issuer's
                    Registration Statement on Form F-4/S-4, Registration No.
                    333-38063 and incorporated herein by reference)

4.2                 Indenture, dated May 18, 1998, among Terra Nova, Bermuda
                    Holdings, The Chase Manhattan Bank, as Trustee. (Filed as
                    Exhibit 4.2 to the Terra Nova's Registration Statement on
                    Form F-4/S-4, Registration No. 333-53999 and incorporated
                    herein by reference)

*4.10               Form of Indenture, between Markel Corporation and The Chase
                    Manhattan Bank, as trustee, relating to the 7.2% Notes

*4.11               Form of Indenture, between Markel Corporation and The Chase
                    Manhattan Bank, as trustee, relating to the 7.0% Notes

*4.12               Form of First Supplemental Indenture, among Terra Nova,
                    Bermuda Holdings,The Chase Manhattan Bank, as Trustee,
                    amending the Indenture ated August 26,1997

*4.13               Form of First Supplemental Indenture, among Terra Nova,
                    Bermuda Holdings,The Chase Manhattan Bank, as Trustee,
                    amending the Indenture dated May 18, 1998

*5.1                Opinion of McGuireWoods LLP regarding the legality of the
                    securities

*8.1                Opinion of McGuireWoods LLP regarding material U.S. federal
                    income tax consequences

*12.1               Markel statement of computation of ratio of earnings to
                    fixed charges

                                      II-8








 *12.2        Bermuda Holdings statement of computation of ratio of earnings to
              fixed charges

 *23.1        Consent of KPMG LLP

  23.2        Consent of KPMG Audit plc

 *23.3        Consent of PricewaterhouseCoopers LLP

 *23.4        Consent of McGuireWoods LLP (included in Exhibits 5.1 and 8.1)

 *24          Powers of Attorney

 *25.1        Statement of Eligibility and Qualification under the Trust
              Indenture Act of 1939 of The Chase Manhattan Bank, as trustee

**99.1        Form of Letter of Transmittal


**99.2        Form of Letter to Depository Trust Company Participants


**99.3        Form of Letter to Beneficial Owners


________________________________

** Filed herewith.
* Previously filed.

                                      II-9