RNS Number:4325Q
Cambridge Antibody Tech Group PLC
01 October 2003


                                   SCHEDULE 5

                        BLOCKLISTING SIX MONTHLY RETURN



1. Name of company

Cambridge Antibody Technology



2. Name of scheme

Company Share Option Plan

3. Period of return: From 1 April 2003 to 30 September 2003



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

414,703


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

188,447

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

226,256

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

38,338,320

Contact for queries:     Assistant Company Secretary

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

                              Name: Justin Hoskins

                            Telephone: 01223 471471




                                   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 April 2003 to 30 September 2003



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

354,610


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

135,524

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

219,086

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

38,338,320

Contact for queries:     Assistant Company Secretary

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

Name: Justin Hoskins

Telephone: 01223 471471





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

BLRDFLFBXBBBFBE