Blocklisting Interim Review

RNS Number:4178K
Cambridge Antibody Tech Group PLC
31 March 2005

                                   SCHEDULE 5

                        BLOCKLISTING SIX MONTHLY RETURN


1. Name of company

   Cambridge Antibody Technology Group plc


2. Name of scheme

   Shares to be issued to Non Executive Directors


3. Period of return:     From     1 October 2004       to 31 March 2005


4. Number and class of shares(s)
   (amount of stock/debt security)
   not issued under scheme

   55,829 (7,179 plus 48,650 blocklisted on 27 January 2005)


5. Number of shares issued/allotted
   under scheme during period

   8,919


6. Balance under scheme not yet issued/allotted
   at end of period

   46,910


7. Number and class of share(s)
   (amount of stock/debt securities)
   originally listed and the date of admission

   7,179 on 1 December 2004

Please confirm total number of shares in issue at the end of the period
in order for us to update our records

51,609,987


Contact for queries:


Name:           Justin Hoskins

Address:        Cambridge Antibody Technology
                Milstein Building
                Granta Park
                Cambridge  CB1 6GH


Telephone:      [phone]


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