Holding(s) in Company

Oxford Instruments was notified yesterday that Aviva plc and its subsidiaries
has a direct interest in 1,442,519 Ordinary Shares of 5p each, which represents
2.92% of the issued share capital of the Company. The number of voting rights
is also 1,442,519.

The Registered Holders of these shares are as follows:

BNY Norwich Union Nominees Limited 241,579*

Chase GA Group Nominees Limited 937,732*

Chase Nominees Limited 84,621*

CUIM Nominee Limited 155,313*

Vidacos Nominees Limited 23,274*

* denotes direct interest

Susan Johnson-Brett

Company Secretary

01865 393324