OXIG Oxford Instruments Plc

                            Oxford Instruments plc                             

          Notification of transactions by PDMR and Connected Persons           

On 29 October 2012 certain purchases and awards of ordinary shares of 5 pence
each in the capital of Oxford Instruments plc (the "Company") were made under
the all-employee Oxford Instruments Share Incentive Plan (the "SIP") including
by and to the following Executive Directors (PDMR) and Connected Person as
follows:

    Executive Director       No. of shares   No. of shares 
                             acquired as      awarded as   
  (or Connected Person as     Partnership   Matching Shares
         relevant)              Shares                     
                                                           
        Kevin Boyd                 9               2       
                                                           
      Jonathan Flint               9               2       
                                                           
      Charles Holroyd              9               2       
                                                           
      (Claire Flint)               2               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 £13.4278 each. The Matching Shares are subject to a risk of forfeiture which will normally be removed on the third anniversary of award subject to the participant's continued employment and the retention of the linked Partnership Shares. No consideration was paid by the participants for the award of the Matching Shares and no consideration is due on the release of the Matching Shares or in relation to Partnership Shares and Dividend Shares.

The above transactions were undertaken on behalf of the above individuals by the trustee of the SIP and the shares were purchased on the London Stock Exchange.

The above notifications are made in accordance with Rule 3.1.4 of the UKLA Disclosure Rules and Transparency Rules.

Oxford Instruments plc was notified of the above transactions on 30 October 2012.

Name of contact and telephone number for queries: Susan Johnson-Brett, 01865 393324.

For and on behalf of Oxford Instruments plc

Date: 30 October 2012