Blocklisting - Interim Review

BLOCK LISTING SIX MONTHLY RETURN Information provided on this form must be typed or printed electronically andprovided to an ris.Date: 03 January 2013Name of applicant: Oxford Instruments plc Period of return: From: 1 July 2012 To: 31 December 2012 Name of scheme: ESO Scheme Save As You Earn Senior (A3274711995) Share Option Executive Scheme Long-Term Incentive Scheme (SELTIS) Balance of unallotted 370,645 3,669 0 securities under scheme(s) from previous return: Plus: The amount by which the 415,000 N/A 280,000 block scheme(s) has been increased since the date of the last return (if any increase has been applied for): Less: Number of securities 431,025 1,893 160,000 issued/allotted under scheme (s) during period (see LR3.5.7G): Equals: Balance under scheme 354,620 1,776 120,000 (s) not yet issued/allotted at end of period: Note: This block listing is no longer required as all options have been exercised and the scheme is now closed. Name of contact: Susan Johnson-Brett Telephone number of contact: 01865 393324