EPT Disclosure

RNS Number:1910D
Morgan Stanley Securities Ld(EPT)
18 May 2006



                                   FORM 38.5



                 DEALINGS BY CONNECTED EXEMPT PRINCIPAL TRADERS

             (Rule 38.5 of the City Code on Takeovers and Mergers)





1.         KEY INFORMATION




Name of exempt principal trader                Morgan Stanley Securities Limited
Company dealt in                               Cambridge Antibody Technology Group Plc
Class of relevant security to which the        Ordinary Shares
dealings being disclosed relate (Note 1)

Date of dealing                                17 May 2006






2.         DEALINGS (Note 2)



(a)        Purchases and sales


Total number of securities purchased   Highest price paid GBP                Lowest price paid GBP


16,700                                 12.98                                 12.97


Total number of securities sold        Highest price received GBP            Lowest price paid received GBP


27,365                                 12.98                                 12.97

(b)       Derivatives transactions (other than options)


Product name,         Long/short                Number of securities                 Price per unit GBP

e.g. CFD
CFD                   SHORT                     4,867                                12.98
CFD                   SHORT                     3,009                                12.97
CFD                   SHORT                     19,489                               12.96
CFD                   LONG                      15,200                               12.99
CFD                   LONG                      1,500                                12.98


3.         OTHER INFORMATION



Agreements, arrangements or understandings relating to options or derivatives




Full details of any agreement, arrangement or understanding between the person disclosing and any other person relating
to the voting rights of any relevant securities under any option referred to on this form or relating to the voting
rights or future acquisition or disposal of any relevant securities to which any derivative referred to on this form is
referenced.  If none, this should be stated.


NONE






Date of disclosure                                                18 May 2006

Contact name                                                      Mandeep Bhandal

Telephone number                                                  020 7677 5468

Name of offeree/offeror with which associated                     Cambridge Antibody Technology Group Plc
Specify category and nature of associate status 6                 Advisor




Notes



The Notes on Form 38.5 can be viewed on the Takeover Panel's website at
www.thetakeoverpanel.org.uk


                      This information is provided by RNS
            The company news service from the London Stock Exchange
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