Director/PDMR Shareholding

NOTIFICATION OF TRANSACTIONS OF DIRECTORS' DEALINGS Oxford Instruments plc (the "Company") announces that the following director'sdealing took place: On 1 July 2014, Kevin Boyd acquired ordinary shares of 5p each in the Companyupon the exercise of approved options granted under the Oxford Instruments 2001Executive Share Option Scheme "ESOS". All shares acquired in this way wereretained by the director. ESOS Options exercised and shares sold No. of Base option No. of Shares Shares options price shares sold retained exercised acquired Kevin Boyd 2,127 705p 2,127 nil 2,127 Finance Director Following this transaction, Kevin Boyd now holds the following number ofordinary shares of 5p in the Company:- Kevin Boyd Finance Director Interest in shares before 91,647notification Total interest in shares 93,774following this notification % of issued share capital 0.16% This notice is given in fulfilment of the obligations under DTR 3.1.4R(1) 2 July 2014 Susan Johnson-BrettCompany SecretaryOxford Instruments plcTel: 01865 393324

Email: susan.johnson-brett@oxinst.com