Holding(s) in Company

Oxford Instruments has been notified today that Aviva plc and its subsidiaries
has an interest in 2,460,553 Ordinary Shares of 5p each which, represents 4.99%
of the issued share capital of the Company. The number of voting rights is also
2,460,553 (1,858,795 direct and 601,758 indirect).

The Registered Holders of these shares are as follows:

BNY Norwich Union Nominees Limited 327,595*

Chase GA Group Nominees Limited 1,050,084*

Chase Nominees Limited 107,467*

CUIM Nominee Limited 346,445*

Vidacos Nominees Limited 27,2048*

Chase Nominees Limited 2,780

CUIM Nominee Limited 55,248

Vidacos Nominees Limited 543,730

* denotes direct interest