Holding(s) in Company

Oxford Instruments plc

Notification of Major Interest in Shares

Oxford Instruments was notified today that Aviva plc and its subsidiaries has a
direct interest in 1,563,148 Ordinary Shares of 5p each, which represents 3.16%
of the issued share capital of the Company. The number of voting rights is also
1,563,148.

The Registered Holders of these shares are as follows:

BNY Norwich Union Nominees Limited 187,394*

Chase GA Group Nominees Limited 1,258,109*

Chase Nominees Limited 79,995*

CUIM Nominee Limited 14,376*

Vidacos Nominees Limited 23,274*

* denotes direct interest

Susan Johnson-Brett

Company Secretary

01865 393324