RNS Number:5185Q
Isotron PLC
3 October 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.

     105,000


6)   Percentage of issued Class

     0.498%

7)   Number of shares/amount of stock disposed



8)   Percentage of issued Class



9)   Class of security

     25P ORDINARY SHARES


10)  Date of transaction

     1/10/03


11)  Date company informed

     2/10/03


12)  Total holding following this notification

     852,437

               
13)  Total percentage holding of issued class following this notification

     4.046%


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     3/10/03

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

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