RNS Number:7717S
Isotron PLC
2 December 2003

To: RNS

Section 198 - 202 Companies Act 1985

We are writing to notify you that ISIS Asset Management plc, notified us on 2 
December 2003 that as a result of a sale of 191,622 ordinary shares of 25p each 
in Isotron plc on 1 December 2003, the Friends Provident group are interested in 
the Shares referred to below through client holdings:

ISIS Asset Management plc     2,002,689 shares           9.49%

Details of the registered holders are attached.

From: Isotron plc 
 

Clients of ISIS Asset Management plc

Chase Nominees Ltd for
     I&S ISIS Trust PLC                      116,494 
     Discovery Trust                         376,038 
     Active Capital Trust                    352,674


Clients of Friends Provident Unit Managers

Chase Nominees Ltd for
     ISIS Inst Inv Fund ICVC Inst
     UK Equity Fund                         25,463
     ISIS Inst Inv Funds ICVC
     UK Smaller Cos Fund                   574,236
     ISIS Inv Funds ICVC 1 1
     UK Smaller Cos Fund                    32,876


ISIS Managed Pension Funds

Chase Nominees Ltd for
     RSA Plc Fund Account No 1
     UK Equity                              26,302
     RSA Plc New UK Equity Fund             72,512
     RSA Life & Pensions
     (RSALP) Fund                          202,729
     Sun Alliance & London Assurance
     Co(SALAC)                             170,400 
Citifriends for
     ISISMPF UK Smaller Companies           52,965



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

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