Blocklisting Interim Review

RNS Number:3593L
Cambridge Antibody Tech Group PLC
9 October 2001


                                  SCHEDULE 5

                       BLOCKLISTING SIX MONTHLY RETURN



1. Name of company
Cambridge Antibody Technology


2. Name of scheme
(a) Cambridge Antibody Technology Share Option Scheme

(b) Cambridge Antibody Technology AESOP Scheme

(c) Shares issued to Non Executive Directors


3. Period of return:

From 1 October 2000 to 30 September 2001


4. Number and class of shares(s)
(amount of stock/debt security)
not issued under scheme
741,205


5. Number of shares issued/allotted
under scheme during period
(a) 362,673

(b) 13,230

(c) 13,336 (includes 1,142 shares issued to Non Executive Directors in 1999
not previously disclosed)


6. Balance under scheme not yet issued/allotted
at end of period
351,966


7. Number and class of share(s)
(amount of stock/debt securities)
originally listed and the date of admission
22,136,251

10p Ordinary shares

25 March 1997


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

35,455,465

Contact for queries:     Diane Mellett

Address: CAT Group plc, The Science Park, Melbourn, Cambridgeshire SG8 6JJ

Name: Diane Mellett. Company Secretary

Telephone: [phone]