EPT Disclosure

RNS Number:1264D
GoldmanSachs International
17 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                Goldman Sachs International

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                                16 May 2006


2.         DEALINGS (Note 2)

(a)        Purchases and sales

Total number of securities purchased   Highest price paid (Note 3)           Lowest price paid (Note 3)

141200                                 13.0031 GBP                           12.9648 GBP


Total number of securities sold        Highest price received (Note 3)       Lowest price received (Note 3)

80350                                  12.9819 GBP                           12.9819 GBP


 (b)       Derivatives transactions (other than options)

Product name,         Long/short (Note 4)       Number of securities (Note 5)        Price per unit (Note 3)
e.g. CFD

CFD                   Long                      50000                                13.0057 GBP


(c)        Options transactions in respect of existing securities
(i)         Writing, selling, purchasing or varying


Product name,   Writing, selling, Number of securities to  Exercise       Type, e.g.   Expiry     Option money
                  purchasing,     which the option relates                American,
e.g. call       varying etc.      (Note 5)                 price          European     date       paid/received per
option                                                                    etc.                    unit (Note 3)



(ii)        Exercising

Product name, e.g. call option         Number of securities                  Exercise price per unit (Note 3)



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.




Date of disclosure                                                17 May 2006

Contact name                                                      Peter Highton

Telephone number                                                  [phone]

Name of offeree/offeror with which connected
Nature of connection (Note 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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