Director/PDMR Shareholding

Oxford Instruments plc Notification of transactions by PDMR and Connected Persons On 22 April 2014 certain purchases and awards of ordinary shares of 5 penceeach in the capital of Oxford Instruments plc (the "Company") were made underthe all-employee Oxford Instruments Share Incentive Plan (the "SIP") by thefollowing Executive Directors (PDMR) as follows: Executive Director No. of Dividend Shares acquired Kevin Boyd 7 Jonathan Flint 7 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 £13.926 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 23 April 2014. Name of contact and telephone number for queries: Susan Johnson-Brett, 01865393324. For and on behalf of Oxford Instruments plc

Date: 23 April 2014