Delisting

Cambridge Antibody Tech Group PLC
30 June 2006

                                                                    30 June 2006

                Cambridge Antibody Technology Group plc ("CAT")

                                   Delisting

AstraZeneca UK Limited announced on 22 June 2006, that its recommended offer for
CAT had been declared unconditional in all respects.



Application has been made by CAT to the UKLA for the cancellation of CAT's
listing on the Official List of the UKLA and to the London Stock Exchange for
the cancellation of the admission to trading of CAT shares on the London Stock
Exchange's market for listed securities. It is anticipated that cancellation of
listing and admission to trading will take effect from 28 July 2006, being 20
business days following the date of this announcement.




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