Ex Entitlement Details Update

Cambridge Antibody Tech Group PLC
6 April 2000

ENTITLEMENT ISSUE
SECURITY TITLE
*Ord Shs
MNEMONIC CODE           *CAT
SEDOL CODE              *166-225
TERMS                   *As part of the New Ord Shares to raise 100 Million.
                         Shareholders could have subscribed for New Ord Shares
                         (at the Offer Price, 1850p per share).
                         Holders could have applied for shares for a cash       
                        amount upto their Pro Rata Entitlement.
EX DATE                 *08-03-00
RECORD DATE             *29-02-00
SPLITTING APPLICATION FORMS *29-03-00 4.30pm
RECEIPT OF APPLICATION FORMS *31-03-00 4.30pm
DEALING COMMENCE NEW SHARES *04-04-00
NOTES *Confirmed terms & offer price.