Holding in Company

Oxford Instruments PLC 11 July 2001 The Company has been notified today for the purposes of Part VI of the Companies Act 1985 that Aberforth Partners has a notifiable interest in 5,280,000 (previously 4,880,000) Ordinary Shares of 5p each which, represents 11.04% (previously 10.20%) of the issued share capital of Oxford Instruments plc. This interest arises as a result of the discretionary investment management powers that Aberforth Partners can exercise over the funds of their clients. Aberforth Partners is not the beneficial owner of these shares. The shares to which this notification relates are registered as follows: Registered Holder Number of Shares Clydesdale Bank (Head Office) Nominees Limited A/c 2,069,700 ABERFIT1 Clydesdale Bank (Head Office) Nominees Limited A/c 1,111,600 ABERFIT2 Clydesdale Bank (Head Office) Nominees Limited A/c 1,098,700 ABERFUT1 Clydesdale Bank (Head Office) Nominees Limited A/c 500,000 ABERLP1A Clydesdale Bank (Head Office) Nominees Limited A/c 500,000 ABERLP1B Della Gorham (Mrs) Assistant Company Secretary
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