RNS Number:2826J
JP Morgan Investment Management Inc
27 March 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 27th March 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     26th March 2003


Dealing in      Cambridge Antibody Technology Group plc     (name of company)


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



        (2) Amount bought


        Amount Sold


     26,734


        Price per unit


     380 p



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

(and percentage of class)      346,873     (     0.95     %)


(4) Party making disclosure      J.P. Morgan Investment Management Inc


(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 Investment Management Inc


(6) Reason for disclosure (Note 2)

     (a) associate of      (i) offeror (Note 3)           NO

                         (ii) offeree company           NO


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


     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)      YES


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
END

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