Blocklisting Interim Review

RNS Number:3433X
Cambridge Antibody Tech Group PLC
05 April 2004


                                   SCHEDULE 5

                        BLOCKLISTING SIX MONTHLY RETURN



1. Name of company

Cambridge Antibody Technology


2. Name of scheme

Share Incentive Plan (formerly All employee Share Ownership Plan)


3. Period of return:   From  1 October 2003  to 31 March 2004



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


219,086



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


142,291


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


76,795



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


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



41,077,807


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 newsservice from the London Stock Exchange
END

BLRBELFBZZBXBBX