Director/PDMR Shareholding

Oxford Instruments plc Notification of transactions by PDMR and Connected Persons On 11 August 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") includingby and to the following Executive Directors (PDMR) and Connected Person asfollows: Executive Director No. of shares acquired No. of shares awarded as Partnership Shares as Matching Shares (or Connected Person as relevant) Kevin Boyd 12 2 Jonathan Flint 10 2 (Claire Flint) 12 2 Claire Flint is a Connected Person to Jonathan Flint by way of marriage. The Partnership Shares and Matching Shares were acquired at a cost of £12.49each. The Matching Shares are subject to a risk of forfeiture which willnormally be removed on the third anniversary of award subject to theparticipant's continued employment and the retention of the linked PartnershipShares. No consideration was paid by the participants for the award of theMatching Shares and no consideration is due on the release of the MatchingShares or in relation to Partnership Shares. 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 13 August2014. Name of contact and telephone number for queries: Susan Johnson-Brett, 01865 393324. For and on behalf of Oxford Instruments plc

Date: 13 August 2014