Holding(s) in Company

RNS Number:5916P
Isotron PLC
10 September 2003


                           SCHEDULE 10
 
             NOTIFICATION OF MAJOR INTERESTS IN SHARES


1)   NAME OF COMPANY

     ISOTRON PLC

2)   NAME OF SHAREHOLDER HAVING A MAJOR INTEREST

      STANDARD LIFE INVESTMENTS

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

        2 ABOVE

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

       STANLIFE NOMINEES LIMITED

5)   Number of shares/amount of stock acquired.

        133,465

6)   Percentage of issued Class

        0.63%

7)   Number of shares/amount of stock disposed


8)   Percentage of issued Class


9)   Class of security

      25P ORDINARY SHARES

10)  Date of transaction

      08/09/03

11)  Date company informed

      09/09/03

12)  Total holding following this notification

      731,652
               
13)  Total percentage holding of issued class following this notification

      3.47%

14)  Any additional information



15)  Name of contact and telephone number for queries

      MRS C E BRAY - 01793 567900

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

     Date of Notification 10 SEPTEMBER 2003





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