Announcement








                  Company Merrill Lynch International
                  TIDMTTP
                  Headline EMM Disclosure
                  Released 12:24 21 Feb 2003
                  Number 8083H






      FORM 38.5 (SUMMARY)

      Lodge with Company Announcements Office and the Panel. Use a separate
      form for each class of securities in which dealings have been made.

      CONNECTED EXEMPT MARKET-MAKERS:

      DISCLOSURE UNDER RULE 38.5 OF THE CITY CODE ON TAKEOVERS AND MERGERS
      Name of EMM Merrill Lynch International
      Date of disclosure 21 February 2003
      Date of dealing 20 February 2003
      Telephone number 020 7996 1038
      Please see attached disclosure of dealings under Rule 38.5 in the
      securities of the following companies:
      20 February 2003
      Cambridge Antibody Tech Group - Common
      Celltech Group Plc - Ordinary
      Oxford Glycosciences Plc - Common
      AMENDMENT
      state which element(s) of disclosure was incorrect:
      In the case of option business or dealings in derivatives full details
      should be given on a separate sheet so
      that the nature of the dealings can be fully understood. For options
      this should include the number of securities under option, the exercise
      period (or in the case of exercise, the exercise date), the exercise
      price and any option money paid or received. For derivatives this should
      include, at least, the number of reference
      securities to which they relate (when relevant), the maturity date (or
      if applicable the closing out date) and the reference price.
      For full details of disclosure requirements see Rules 8 and 38 of the
      Code. If in doubt contact the Monitoring
      Section of the Panel, Tel. No: 0171 638 0129




      FORM 38.5

      Lodge with Company Announcements Office and the Panel. Use a separate
      form for each class of securities in which dealings have been made.

      CONNECTED EXEMPT MARKET-MAKERS:

      DISCLOSURE UNDER RULE 38.5 OF THE CITY CODE ON TAKEOVERS AND MERGERS
      Dealing in Oxford Glycosciences Plc
      Class of security Common
      Date of disclosure 21 February 2003
      Date of dealing 20 February 2003
      Name of EMM Merrill Lynch International
      Name of offeree/offeror with whom connected Cambridge Antibody Tech
      Group
      Number of securities purchased 50,330
      Highest price paid* GBP1.90
      Lowest price paid* GBP1.88
      Number of securities sold 50,000
      Highest price paid* GBP1.91
      Lowest price paid* GBP1.91
      *Currency must be stated



      FORM 38.5

      Lodge with Company Announcements Office and the Panel. Use a separate
      form for each class of securities in which dealings have been made.

      CONNECTED EXEMPT MARKET-MAKERS:

      DISCLOSURE UNDER RULE 38.5 OF THE CITY CODE ON TAKEOVERS AND MERGERS
      Dealing in Celltech Group Plc
      Class of security Ordinary
      Date of disclosure 21 February 2003
      Date of dealing 20 February 2003
      Name of EMM Merrill Lynch International
      Name of offeree/offeror with whom connected Cambridge Antibody
      Technology Group Plc
      Number of securities purchased 109,509
      Highest price paid* GBP3.51
      Lowest price paid* GBP3.38
      Number of securities sold 161,270
      Highest price paid* GBP3.50
      Lowest price paid* GBP3.37
      *Currency must be stated



      FORM 38.5

      Lodge with Company Announcements Office and the Panel. Use a separate
      form for each class of securities in which dealings have been made.

      CONNECTED EXEMPT MARKET-MAKERS:

      DISCLOSURE UNDER RULE 38.5 OF THE CITY CODE ON TAKEOVERS AND MERGERS
      Dealing in Cambridge Antibody Tech Group
      Class of security Common
      Date of disclosure 21 February 2003
      Date of dealing 20 February 2003
      Name of EMM Merrill Lynch International
      Name of offeree/offeror with whom connected Cambridge Antibody Tech Group
      Number of securities purchased 500,000
      Highest price paid* GBP4.40
      Lowest price paid* GBP4.37
      Number of securities sold 483,200
      Highest price paid* GBP4.40
      Lowest price paid* GBP4.37
      *Currency must be stated

END