Director/PDMR Shareholding

Oxford Instruments plc Notification of transactions by PDMR and Connected Persons On 06 May 2015 certain purchases and awards of ordinary shares of 5 pence eachin the capital of Oxford Instruments plc (the "Company") were made under theall-employee Oxford Instruments Share Incentive Plan (the "SIP") by thefollowing Executive Directors (PDMR) as follows: Executive Director No. of Dividend Shares acquired Kevin Boyd 11 Jonathan Flint 12 The executive directors applied dividends paid on shares held in the OxfordInstruments Share Incentive Plan to purchase ordinary shares of 5 pence at acost of £9.865 per share as "dividend shares" under the all-employee OxfordInstruments Share Incentive Plan as detailed above. The above transactions were undertaken on behalf of the above individuals bythe trustee of the SIP and the shares were purchased on the London StockExchange. The above notifications are made in accordance with Rule 3.1.4 of the UKLADisclosure Rules and Transparency Rules. Oxford Instruments plc was notified of the above transactions on 8 May 2015. Name of contact and telephone number for queries: Susan Johnson-Brett, 01865 393324. For and on behalf of Oxford Instruments plc

Date: 11 May 2015