3rd Jul 2007 14:57
Opsec Security Group PLC03 July 2007 TR-1: NOTIFICATION OF MAJOR INTEREST IN SHARES 1. Identity of the issuer or the underlying issuer of existing shares to whichvoting rights are attached Opsec Security Group PLC 2. Reason for the notification (please tick the appropriate box or boxes) An acquisition or disposal of voting rights (x) An acquisition or disposal of financial instruments which may result in theacquisition of shares already issued to which voting rights are attached ( ) An event changing the breakdown of voting rights ( ) Other (specify): 3. Full name of person(s) subject to the notification obligation: Newton Investment Management Limited 4. Full name of shareholder(s) (if different from 3.) 5. Date of the transaction (and date on which the threshold is crossed orreached if different): 27/06/2007 6. Date on which issuer notified: 28/06/2007 7. Threshold(s) that is/are crossed or reached: Decrease from 3.50% to 2.41% 8. Notified details: Sale 581,114 shares A. Voting rights attached to shares Class/type of shares (if possible using the ISIN code) Ordinary Shares GB000462191 Situation previous to the Resulting situation after the triggeringtriggering transaction transactionNumber of Number of Voting Number Number of voting % of voting Rights of rights rights sharesShares Direct Direct Indirect Direct Indirect 1,866,709 3.50% N/A N/A 1,285,595 N/A 2.41% B. Financial Instruments Resulting situation after the triggering transaction Type of Expiration Exercise/ Number of voting rights that may % offinancial date Conversion be acquired if the instrument is votinginstrument Period/Date exercised/ converted rights Total (A+B) Number of voting rights % of voting rights 1,285,595 2.41% 9. Chain of controlled undertakings through which the voting rights and/or the financial instruments are effectively held, if applicable: Newton Investment Management hold these shares as a Discretionary InvestmentManager Proxy Voting: 10. Name of the proxy holder: N/A 11. Number of voting rights proxy holder will cease to hold: N/A 12. Date on which proxy holder will cease to hold voting rights: N/A 13. Additional information: 14: Contact name: Clare Cox / Barry Smalls 15. Contact telephone number: +44 (0)207 163 2331 / 2251 This information is provided by RNS The company news service from the London Stock ExchangeRelated Shares:
OSG.L