Holding(s) in Company

Cambridge Antibody Tech Group PLC
27 January 2004

                                  SCHEDULE 10

                   NOTIFICATION OF MAJOR INTERESTS IN SHARES


1)   Name of company

Cambridge Antibody Technology



2)   Name of shareholder having a major interest
Accipiter Capital Management LLC and Candens Capital, LLC


3)   Please state whether notification indicates that it is in respect of
     holding of the shareholder named in 2 above or in respect of a
     non-beneficial interest or in the case of an individual holder if it is a
     holding of that person's spouse or children under the age of 18
As in 2 above


4)   Name of the registered holder(s) and, if more than one holder, the
     number of shares held by each of them
Accipiter Life Sciences Fund, LP          490,190

Accipiter Life Sciences Fund, (QP), LP    302,602

Accipiter Life Sciences Fund, Ltd         467,591


5)   Number of shares/amount of stock acquired
Not disclosed


6)   Percentage of issued class
3.1%


7)   Number of shares/amount of stock disposed
None


8)   Percentage of issued class
N/A


9)   Class of security
Ordinary 10 pence shares


10)  Date of transaction
Not disclosed


11)  Date company informed
27 January 2004


12)  Total holding following this notification
1,260,383


13)  Total percentage holding of issued class following this notification
3.1%


14)  Any additional information
None


15)  Name of contact and telephone number for queries
Diane Mellett 01223 471471


16)  Name and signature of authorised company official responsible for
     making this notification
Diane Mellett, Company Secretary
     Date of notification 27 January 2004





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