RNS Number:5745J
J.P. Morgan Securities Ltd
02 April 2003



                                                                    FORM 8.1/8.3


        Lodge with Company Announcements Office (which will publicise and copy
        to the Panel).

        Use separate form for each class of securities in which dealings have
        been made.


     Date of disclosure 2nd April 2003


DISCLOSURE UNDER RULES 8.1(a), 8.1(b)(i) AND 8.3

OF THE CITY CODE ON TAKE-OVERS AND MERGERS


Date of dealing     31st March 2003


Dealing in      Cambridge Antibody Technologies Plc     (name of company)


        (1) Class of securities (eg ordinary shares)       Ordinary Shares



        (2) Amount bought


            7,868




        Amount Sold


        0




        Price per unit


        350 p




(3) Resultant total of the same class owned or controlled

(and percentage of class)      7,868     (  0.02  %)


(4) Party making disclosure      J.P. Morgan Securities Limited


(5) EITHER     (a) Name of purchaser/vendor (Note 1)

OR      (b) If dealing for discretionary client(s), name of fund management
             organisation


                  J.P. Morgan Securities Limited


(6) Reason for disclosure (Note 2)

     (a) associate of      (i) offeror (Note 3)           YES

     (ii) offeree company           NO


     Specify which category or categories of associate (1-8)      2


     If category (8), explain




     (b) Rule 8.3 (ie disclosure because of ownership or control of 1% or more
         of the class of relevant securities dealt in)      NO


Signed, for and on behalf of the party named in (4) above


(Also print name of signatory)      Mukesh Halai


Telephone and extension number      020 7325 9925


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