FORM 6-K

                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

                        Report of Foreign Private Issuer

                    Pursuant to Rule 13s - 16 or 15d - 16 of
                      the Securities Exchange Act of 1934

                           For the month of March 2007


                                  Acambis plc
                (Translation of registrant's name into English)

                           Peterhouse Technology Park
                               100 Fulbourn Road
                               Cambridge CB1 9PT
                                    England

                    (address of principal executive offices)

    (Indicate by check mark whether the registrant files or will file annual
                 reports under cover of Form 20-F or Form 40-F

                         Forms 20-F X     Form 40-F

  Indicate by check mark whether the registrant by furnishing the information
     contained in this Form also thereby furnishing the information to the
                Commission pursuant to Rule 12g3-2(b) under the
                       Securities Exchange Act of 1934).

                              Yes       No X

 (if "Yes" is marked, indicate below the file number assigned to the registrant
                   in connection with Rule 12g3-2(b): 82- ).




Enclosure:

1.  Holding(s) in Company - 09 March 2007

2.  Director/PDMR Shareholding - 21 March 2007

3.  Holding(s) in Company - 26 March 2007

4.  Director/PDMR Shareholding - 27 March 2007




Enclosure 1


Holding in Company


Cambridge,  UK  and  Cambridge,  Massachusetts  - 9  March  2007 -  Acambis  plc
("Acambis")  (LSE: ACM) announces an interest in its shares by The Goldman Sachs
Group, Inc.


On 8 March 2007, Acambis received notification that, as of the close of business
on 6 March 2007, The Goldman Sachs Group,  Inc.,  ("GS Inc") of 85 Broad Street,
New York, NY 10004, USA, was interested in a total of 12,887,424 ordinary shares
of 10p each, representing an 11.97% holding of Acambis' issued share capital.


Of these 12,887,424 shares:


a)   The interest in  11,739,909  shares arose from an interest held by Goldman,
     Sachs  & Co.,  a  wholly-owned  direct  subsidiary  of GS  Inc,  acting  as
     custodian for its  customers.  These shares are, or will be,  registered in
     the name of Goldman Sachs Securities (Nominees), Limited; and

b)   The interest in 739,815  shares arose from a  beneficial  interest  held by
     Goldman Sachs International,  a wholly-owned indirect subsidiary of GS Inc.
     These shares are, or will be, registered at CREST in account CREPTEMP; and

c)   The interest in 407,700 shares arose from an interest held by GS&Co, acting
     as  custodian  of 203,850  ADRs;  these ADRs are,  or will be,  held at The
     Depositary Trust Company, New York.


                                     -ends-


Enquiries:


Acambis plc

Elizabeth Brown, Company Secretary:                   Tel: +44 (0) 1223 275 300

Lyndsay Wright, VP, Communications and
 Investor Relations:                                  Tel: +44 (0) 1223 275 300


About Acambis

Acambis is a leading  biotechnology  company targeting  infectious diseases with
novel vaccines. Acambis' development-stage pipeline includes vaccines that could
either offer  improvements over existing products or target unmet medical needs.
As well as ChimeriVax-JE,  Acambis' proprietary ChimeriVax technology, developed
in  association  with St  Louis  University,  has  also  been  used  to  develop
ChimeriVax-West  Nile, which is undergoing Phase 2 clinical  testing,  making it
the most advanced  investigational  vaccine against the West Nile virus. Acambis
also has the only vaccine in development against Clostridium difficile bacteria,
a leading cause of hospital-acquired  infections.  Recognised internationally as
the  leading   producer  of  smallpox   vaccines,   Acambis  is   developing  an
investigational smallpox vaccine,  ACAM2000, and is manufacturing  emergency-use
stockpiles  of this  investigational  vaccine  for the US  Government  and other
governments around the world.


Acambis  is based in  Cambridge,  UK and  Cambridge,  Massachusetts,  US, and is
listed on the London Stock  Exchange  (ACM).  More  information  is available at

www.acambis.com.


"Safe Harbor"  statement under the Private  Securities  Litigation Reform Act of
1995:

The  statements  in  this  news  release  that  are  not  historical  facts  are
forward-looking  statements that involve risks and uncertainties,  including the
timing and results of clinical trials,  product  development,  manufacturing and
commercialisation risks, the risks of satisfying the regulatory approval process
in a timely manner, the need for and the availability of additional capital. For
a discussion of these and other risks and uncertainties see "Risk management" in
the  Company's  2005  Annual  Report and "Risk  factors"  in its Form  20-F,  in
addition to those detailed on the Company's website and in the Company's filings
made with the  Securities  and  Exchange  Commission  from  time to time.  These
forward-looking  statements are based on estimates and  assumptions  made by the
management of Acambis and are believed to be  reasonable,  though are inherently
uncertain and difficult to predict.  Actual  results or experience  could differ
materially from the forward-looking statements.





Enclosure 2


Increase in Director's shareholding


Cambridge,  UK and  Cambridge,  Massachusetts  - 21  March  2007 -  Acambis  plc
("Acambis")   (LSE:   ACM)   announces  that  on  20  March  2007  Ross  Graham,
Non-executive  Director,  purchased a total of 14,580  shares at 136p per share.
After this transaction, the shareholding in Acambis held by Mr Graham was 20,708
shares, representing approximately 0.02% of Acambis' issued share capital.


                                     -ends-


Enquiries:


Acambis plc

Elizabeth Brown, Company Secretary
Lyndsay Wright, VP, Communications and Investor Relations

Tel: +44 (0) 1223 275 300


About Acambis

Acambis is a leading  biotechnology  company targeting  infectious diseases with
novel vaccines. Acambis' development-stage pipeline includes vaccines that could
either offer  improvements over existing products or target unmet medical needs.
As well as ChimeriVax-JE,  Acambis' proprietary ChimeriVax technology, developed
in  association  with St  Louis  University,  has  also  been  used  to  develop
ChimeriVax-West  Nile, which is undergoing Phase 2 clinical  testing,  making it
the most advanced  investigational  vaccine against the West Nile virus. Acambis
also has the only vaccine in development against Clostridium difficile bacteria,
a leading cause of hospital-acquired  infections.  Recognised internationally as
the  leading   producer  of  smallpox   vaccines,   Acambis  is   developing  an
investigational smallpox vaccine,  ACAM2000, and is manufacturing  emergency-use
stockpiles  of this  investigational  vaccine  for the US  Government  and other
governments around the world.


Acambis  is based in  Cambridge,  UK and  Cambridge,  Massachusetts,  US, and is
listed on the London Stock  Exchange  (ACM).  More  information  is available at

www.acambis.com.


"Safe Harbor"  statement under the Private  Securities  Litigation Reform Act of
1995:

The  statements  in  this  news  release  that  are  not  historical  facts  are
forward-looking  statements that involve risks and uncertainties,  including the
timing and results of clinical trials,  product  development,  manufacturing and
commercialisation risks, the risks of satisfying the regulatory approval process
in a timely manner, the need for and the availability of additional capital. For
a discussion of these and other risks and uncertainties see "Risk management" in
the  Company's  2005  Annual  Report and "Risk  factors"  in its Form  20-F,  in
addition to those detailed on the Company's website and in the Company's filings
made with the  Securities  and  Exchange  Commission  from  time to time.  These
forward-looking  statements are based on estimates and  assumptions  made by the
management of Acambis and are believed to be  reasonable,  though are inherently
uncertain and difficult to predict.  Actual  results or experience  could differ
materially from the forward-looking statements.





Enclosure 3


Holding in Company


Cambridge,  UK and  Cambridge,  Massachusetts  - 26  March  2007 -  Acambis  plc
("Acambis")  (LSE: ACM) announces an interest in its shares by The Goldman Sachs
Group, Inc.


On 23  March  2007,  Acambis  received  notification  that,  as of the  close of
business on 21 March 2007, The Goldman Sachs Group, Inc., ("GS Inc") of 85 Broad
Street,  New York,  NY  10004,  USA,  was  interested  in a total of  11,186,455
ordinary  shares of 10p each,  representing an 10.42% holding of Acambis' issued
share capital.


Of these 11,186,455 shares:


a)   The  interest in 878,515  shares  arose from an  interest  held by Goldman,
     Sachs  & Co.,  a  wholly-owned  direct  subsidiary  of GS  Inc,  acting  as
     custodian for its  customers.  These shares are, or will be,  registered in
     the name of Goldman Sachs Securities (Nominees), Limited; and

b)   The interest in 10,253,440 shares arose from a beneficial  interest held by
     Goldman Sachs International,  a wholly-owned indirect subsidiary of GS Inc.
     These shares are, or will be, registered at CREST in account CREPTEMP; and

c)   The interest in 54,500  shares arose from an interest held by Goldman Sachs
     & Co, acting as custodian of 27,250 ADRs;  these ADRs are, or will be, held
     at The Depositary Trust Company of New York.

                                     -ends-

Enquiries:


Acambis plc

Elizabeth Brown, Company Secretary:                   Tel: +44 (0) 1223 275 300
Lyndsay Wright, VP, Communications
 and Investor Relations:                              Tel: +44 (0) 1223 275 300

About Acambis

Acambis is a leading  biotechnology  company targeting  infectious diseases with
novel vaccines. Acambis' development-stage pipeline includes vaccines that could
either offer  improvements over existing products or target unmet medical needs.
As well as ChimeriVax-JE,  Acambis' proprietary ChimeriVax technology, developed
in  association  with St  Louis  University,  has  also  been  used  to  develop
ChimeriVax-West  Nile, which is undergoing Phase 2 clinical  testing,  making it
the most advanced  investigational  vaccine against the West Nile virus. Acambis
also has the only vaccine in development against Clostridium difficile bacteria,
a leading cause of hospital-acquired  infections.  Recognised internationally as
the  leading   producer  of  smallpox   vaccines,   Acambis  is   developing  an
investigational smallpox vaccine,  ACAM2000, and is manufacturing  emergency-use
stockpiles  of this  investigational  vaccine  for the US  Government  and other
governments around the world.

Acambis  is based in  Cambridge,  UK and  Cambridge,  Massachusetts,  US, and is
listed on the London Stock  Exchange  (ACM).  More  information  is available at
www.acambis.com.

"Safe Harbor"  statement under the Private  Securities  Litigation Reform Act of
1995:

The  statements  in  this  news  release  that  are  not  historical  facts  are
forward-looking  statements that involve risks and uncertainties,  including the
timing and results of clinical trials,  product  development,  manufacturing and
commercialisation risks, the risks of satisfying the regulatory approval process
in a timely manner, the need for and the availability of additional capital. For
a discussion of these and other risks and uncertainties see "Risk management" in
the  Company's  2005  Annual  Report and "Risk  factors"  in its Form  20-F,  in
addition to those detailed on the Company's website and in the Company's filings
made with the  Securities  and  Exchange  Commission  from  time to time.  These
forward-looking  statements are based on estimates and  assumptions  made by the
management of Acambis and are believed to be  reasonable,  though are inherently
uncertain and difficult to predict.  Actual  results or experience  could differ
materially from the forward-looking statements.




Enclosure 4


Director's interest in shares


Cambridge, UK and Cambridge, Massachusetts - 27 March 2007 - Acambis plc
("Acambis") (LSE: ACM) announces that, on 26 March 2007, a share option grant
was made to Dr Michael Watson, Executive Vice President, Research and
Development.


The 275,280 share options were granted under the Acambis 2006 Unapproved Share
Option Plan over ordinary 10p shares at an exercise price of 139p per share. The
options are exercisable between 26 March 2010 and 26 March 2017. No amount was
payable by Dr Watson on the grant of these share options. Following this
transaction, the total shares over which options are held by Dr Watson was
275,280.

                                     -ends-

Enquiries:

Acambis plc

Elizabeth Brown, Company Secretary
Lyndsay Wright, VP, Communications and Investor Relations
Tel: +44 (0) 1223 275 300

About Acambis
Acambis is a leading biotechnology company targeting infectious diseases with
novel vaccines. Acambis' development-stage pipeline includes vaccines that could
either offer improvements over existing products or target unmet medical needs.
As well as ChimeriVax-JE, Acambis' proprietary ChimeriVax technology, developed
in association with St Louis University, has also been used to develop
ChimeriVax-West Nile, which is undergoing Phase 2 clinical testing, making it
the most advanced investigational vaccine against the West Nile virus. Acambis
also has the only vaccine in development against Clostridium difficile bacteria,
a leading cause of hospital-acquired infections. Recognised internationally as
the leading producer of smallpox vaccines, Acambis is developing an
investigational smallpox vaccine, ACAM2000, and is manufacturing emergency-use
stockpiles of this investigational vaccine for the US Government and other
governments around the world.

Acambis is based in Cambridge, UK and Cambridge, Massachusetts, US, and is
listed on the London Stock Exchange (ACM). More information is available at
www.acambis.com.

"Safe Harbor" statement under the Private Securities Litigation Reform Act of
1995:
The statements in this news release that are not historical facts are
forward-looking statements that involve risks and uncertainties, including the
timing and results of clinical trials, product development, manufacturing and
commercialisation risks, the risks of satisfying the regulatory approval process
in a timely manner, the need for and the availability of additional capital. For
a discussion of these and other risks and uncertainties see "Risk management" in
the Company's 2005 Annual Report and "Risk factors" in its Form 20-F, in
addition to those detailed on the Company's website and in the Company's filings
made with the Securities and Exchange Commission from time to time. These
forward-looking statements are based on estimates and assumptions made by the
management of Acambis and are believed to be reasonable, though are inherently
uncertain and difficult to predict. Actual results or experience could differ
materially from the forward-looking statements.








                                      SIGNATURE

Pursuant to the requirements of the Securities Exchange Act of 1934, the
registrant Peptide Therapeutics Group has duly caused this report to be
signed on its behalf by the undersigned, thereunto duly authorized.



Date: 30 March 2007                           ACAMBIS PLC





                                        By:  /s/ Lyndsay Wright
                                             Name: Lyndsay Wright
                                             Title: VP, Communications and IR.