Total Voting Rights

Oxford Instruments plc - Voting Rights and Capital Update

In conformity with the Disclosure and Transparency Rules we would like to
notify the market of the following:

Oxford Instruments plc advises that since 18 November 2009 its capital has
increased by 5,000 ordinary shares with voting rights.

Therefore, the total number of voting rights in Oxford Instruments plc as at 1
December 2009 is 49,414,351.

The above figure (49,414,351) 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.

Susan Johnson-Brett

Company Secretary

Oxford Instruments plc

1 December 2009

Direct dial: 01865 393324

Email: [e-mail]