RNS Number:2126U
Isotron PLC
14 January 2004


LETTER TO:  RNS

SECTION 198-202 COMPANIES ACT 1985

We are writing to notify you that Legal & General Group Plc companies notified
us on 14 January 2004 that following a purchase of 67,000 shares on 13 January
2004 they now have a notifiable interest of 5.30% in the issued share capital of
Isotron plc.  The beneficial holders are detailed below.

Registered Holders                                   Number of Shares held

HSBC Global Custody Nominee (UK) Ltd A/C 914945              9,000
HSBC Global Custody Nominee (UK) Ltd A/C 887711            332,461
HSBC Global Custody Nominee (UK) Ltd A/C 775245            100,000
HSBC Global Custody Nominee (UK) Ltd A/C 357206            544,530
HSBC Global Custody Nominee (UK) Ltd A/C 747381             42,000
HSBC Global Custody Nominee (UK) Ltd A/C 363605             33,943
HSBC Global Custody Nominee (UK) Ltd A/C 866203             28,000
HSBC Global Custody Nominee (UK) Ltd A/C 360509             29,375
                                                         ---------    ------
                                        Total Interest   1,119,309     5.30%
                                                         =========    ======


LETTER FROM:   ISOTRON PLC



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