Holding(s) in Company

The Company has been notified today for the purposes of Part VI of the
Companies Act 1985 that Aberforth Partners LLP has a notifiable interest in
5,998,885 Ordinary Shares of 5p each which, represents 12.31% 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 LLP is not the
beneficial owner of these shares.

The shares to which this notification relates are registered as follows:

Registered Holder                                  Number of Shares            
                                                                               
Nortrust Nominees Ltd A/C ABERFRTH                 4,864,251                   
                                                                               
Bank of Ireland Nominees Limited                   254,400                     
                                                                               
The Church Commissioners for England (Chase GIS)   377,600                     
Nominees Ltd                                                                   
                                                                               
State Street Nominees Ltd A/C JD59                 502,634