Last checked at 1 May 2012 15:31
TR-1: Notifications of Major Interests in Shares 1. Identity of the issuer or the Oxford Instruments PLC underlying issuer of existing shares to which voting rights are attached: 2: Reason for notification (yes/no) An acquisition or disposal of voting rights Yes
An acquisition or disposal of qualifying financial instruments which No may result in the acquisition of shares already issued to which
voting rights are attached
An acquisition or disposal of instruments with similar economic Yes effect to qualifying financial instruments
An event changing the breakdown of voting rights No Other (please specify): No
3. Full name of person(s) subject to the BlackRock UK Emerging Companies notification
Hedge Fund obligation: 4. Full name of shareholder(s) (if different from 3.): 5. Date of the transaction (and date on 27 April 2012 which the threshold is crossed or reached): 6. Date on which issuer notified: 30 April 2012
7. Threshold(s) that is/are crossed or Holding has gone below 3% reached:
8: Notified Details A. Voting rights attached to shares * Class/type of share If possible GB0006650450 use ISIN code Situation previous to the triggering transaction * Number of shares * Number of voting rights n/a n/a Resulting situation after the triggering transaction * Number of Number of voting rights Percentage of shares voting rights * Direct Direct Indirect Direct Indirect 208,097 208,097 n/a Below 3% n/a B. Qualifying Financial Instruments Resulting situation after the triggering transaction Type of Expiration Exercise/ No. of voting Percentage of financial date conversion rights that may voting rights instrument period/date be acquired (if the instrument exercised/ converted) DeltaC: Financial Instruments with similar economic effect to Qualifying Financial Instruments Resulting situation after the triggering transaction Type of Exercise Expiration Exercise/ Number of % of voting financial price date Conversion voting rights instrument period rights instrument refers to CFD 1,463,091 Nominal Delta Below 3% Below 3% Total (A+B+C) Number of voting rights Percentage of voting rights 1,671,188 Below 3%
9. Chain of controlled undertakings through which the voting rights and/or the financial instruments are effectively held, if applicable:
Proxy Voting: 10. Name of the proxy holder: 11. Number of voting rights proxy holder will cease to hold: 12. Date on which proxy holder will cease to hold voting rights: 13. Additional information: 14. Contact name: Susan Johnson-Brett Company Secretary
15. Contact telephone number: 01865 393324
XLON