Director/PDMR Shareholding

Oxford Instruments plc Notification of transactions by PDMR and Connected Persons On 29 October 2013 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 No. of shares No. of Dividend acquired as awarded as Shares acquired (or Connected Person Partnership Shares Matching Shares as relevant) Kevin Boyd 10 2 18 Jonathan Flint 10 2 18 (Claire Flint) 2 0 0 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 £12.945each. 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 and Dividend Shares. On the same date, the executive directors applied dividends paid on shares heldin the Oxford Instruments Share Incentive Plan to purchase ordinary shares of 5pence at a cost of £12.945 per share as "dividend shares" under theall-employee Oxford Instruments 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 30 October2013. Name of contact and telephone number for queries: Susan Johnson-Brett, 01865393324. For and on behalf of Oxford Instruments plc

Date: 30 October 2013