Annual Information Update

Oxford Instruments plc - Annual Information Update 12 May 2010 Oxford Instruments plc (the `Company) is pleased to provide an annual information update, in accordance with the requirements of the Prospectus Rule 5.2. This update refers to information that has been published or made available by the Company to the public up to 30 April 2010. To avoid an unnecessarily lengthy document, information is referred to in the update rather than included in full. The information referred to in this update was up to date at the time the information was published but some information may now be out of date. 1. Regulatory Announcements Date Description of Document 1 June 2009 Price Monitoring Extension (x2) Director/PDMR Shareholding 9 June 2009 Dividend Timetable Final Results & Interim Management Statement 11 June 2009 Annual Information Update 18 June 2009 Holdings in Company 19 June 2009 Price Monitoring Extension (x2) 30 June 2009 Director/PDMR Shareholding 2 July 2009 Oxford Instruments named in FTSE Green Index 8 July 2008 Blocklisting - Interim Review 16 July 2009 £30m ITER contract 30 July 2009 Director/PDMR Shareholding (x2) 2 September 2009 Director/PDMR Shareholding 15 September 2009 AGM Statement 16 September 2009 Result of AGM 28 September 2009 Director/PDMR Shareholding 30 September 2009 Director/PDMR Shareholding 2 October 2009 Oxford Instruments wins second ITER contract 20 October 2009 Notice of Results 27 October 2009 New Segmental Reporting Structure 2 November 2009 Director/PDMR Shareholding 17 November 2009 Half Yearly Report 23 November 2009 Holdings in Company 1 December 2009 Director/PDMR Shareholding Total Voting Rights 7 December 2009 Holdings in Company 18 December 2009 Director/PDMR Shareholding (x2) 5 January 2010 Director/PDMR Shareholding 8 January 2010 Blocklisting - Interim Review 20 January 2010 Interim Management Statement 21 January 2010 Holdings in Company 27 January 2010 Holdings in Company 29 January 2010 Director/PDMR Shareholding 2 February 2010 Total Voting Rights 8 February 2010 Director/PDMR Shareholding 25 February 2010 Holdings in Company 1 March 2010 Director/PDMR Shareholding 4 March 2010 Total Voting Rights 16 March 2010 Analyst Event 30 March 2010 Director/PDMR Shareholding 6 April 2010 Total Voting Rights 8 April 2010 Trading Update 2. Documents Filed at Companies House All of the documents listed below were filed with Companies House on or around the dates indicated. 24 July 2009 363a - Annual Return (full list of members) 17 September 2009 288b - Resignation of Director 18 September 2009 AA - Annual Accounts 23 September 2009 Res 09 - Authority to purchase shares Res 01 - Alteration to Articles Res 13 - Call AGM on 14 days' notice Mem/Arts - Articles of Association 2 October 2009 Res 04 - Increase in authorised share capital 123 - Increase in authorised share capital 7 October 2009 CH01 - Change to directors' particulars (x4) CH03 - Change to secretary's particulars 8 October 2009 CH01 - Change to director's particulars 18 October 2009 CH01 - Change to director's particulars 26 November 2009 SH01 - Statement of Capital 26 January 2010 SH01 - Statement of Capital 2 February 2010 SH01 - Statement of Capital 2 March 2010 SH01 - Statement of Capital 6 April 2010 SH01 - Statement of Capital A copy of this Annual Information Update and copies of the documents referred to in it can be obtained from the Company Secretarial Department at the Company's registered office: Oxford Instruments plc Tubney Woods Abingdon Oxon OX13 5QX Telephone +44 (0) 1865 393324

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