Holding(s) in Company

Oxford Instruments has today received notifications as follows:

1. That BAE Systems Pension Funds Investment Management Limited has an interest
in 1,957,500 (direct) ordinary Shares of 5p each which, represents 3.964% of
the issued share capital of the Company. The number of direct voting rights is
also 1,957,500.

2. That BT Pension Scheme Trustees Limited as trustee of the BT Pension Scheme
has an interest in 2,687,428 (Indirect) Ordinary Shares of 5p each which,
represents 5.442% of the issued share capital of the Company. The number of
Indirect voting rights is also 2,687,428.

Of the above amount Hermes UK Small Companies Focus Fund has a direct interest
in 2,147,135 Ordinary Shares of 5p each which represents 4.348% of the issued
share capital of Oxford Instruments plc.

BT Pension Scheme Trustees Limited is the parent undertaking of Britel Fund
Trustees Limited, which is the parent undertaking of Hermes Fund Managers
Limited. Hermes Fund Managers Limited is the parent undertaking of:

a) Hermes Equity Ownership Services Limited (voting rights held in this issuer
0.279%)

b) Hermes Focus Asset Management Limited (voting rights held in this issuer
5.163%)

Jo Young

Company Secretarial Assistant

Oxford Instruments plc

26 June 2008