Holding(s) in Company

RNS Number:6969A
Cambridge Antibody Tech Group PLC
09 July 2004

                                  SCHEDULE 10

                   NOTIFICATION OF MAJOR INTERESTS IN SHARES


1)   Name of company

     Cambridge Antibody Technology Group plc

2)   Name of shareholder having a major interest

     Janus Capital Management 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

     non-beneficial


4)   Name of the registered holder(s) and, if more than one holder, the
     number of shares held by each of them

     Janus Capital Management LLC


5)   Number of shares/amount of stock acquired

     Not stated


6)   Percentage of issued class

     Not stated

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

     7 July 2004

11)  Date company informed

     9 July 2004

12)  Total holding following this notification

     1,772,097 Ordinary 10 pence shares


13)  Total percentage holding of issued class following this notification

     4.31%

14)  Any additional information

     None


15)  Name of contact and telephone number for queries

     Justin Hoskins 01223 898589

16)  Name and signature of authorised company official responsible for
     making this notification

     Diane Mellett, Company Secretary

     Date of notification: 9 July 2004


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

HOLEASXNEDNLEFE