Total Voting Rights

Oxford Instruments plc - Voting Rights and Capital

In conformity with the Transparency Directive's transitional provision 6 we
would like to notify the market of the following:

Oxford Instruments plc's capital consists of 48,872,926 ordinary shares with
voting rights. Oxford Instruments plc holds no ordinary shares in Treasury.

Therefore, the total number of voting rights in Oxford Instruments plc is
48,872,926.

The above figure may be used by shareholders as the denominator for the
calculations by which they will determine if they are required to notify their
interest in, or a change to their interest in, Oxford Instruments plc under the
FSA's Disclosure and Transparency Rules.

Jo Young

Company Secretarial Assistant

Oxford Instruments plc

TEL: [phone]

28 December 2006