Holding(s) in Company

Cambridge Antibody Tech Group PLC
13 February 2004


                                  SCHEDULE 10

                   NOTIFICATION OF MAJOR INTERESTS IN SHARES


1)   Name of company

     Cambridge Antibody Technology


2)   Name of shareholder having a major interest

     The Goldman Sachs Group Inc


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

     Goldman Sachs Securities (Nominees) Limited             102,404
     The Depositary Trust Company, New York                    2,700
     Goldman Sachs Securities (Nominees) Limited               1,400
     Goldman Sachs International (CREST a/c CREPTEMP)      1,124,332


5)   Number of shares/amount of stock acquired

     not disclosed


6)   Percentage of issued class

     3.0%


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

     11 February 2004


11)  Date company informed

     13 February 2004


12)  Total holding following this notification

     1,230,836



13)  Total percentage holding of issued class following this notification

     3.0%


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 13 February 2004



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