21st Mar 2007 17:30
Opsec Security Group PLC21 March 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 ( ) 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): Final Deadline Re: Transparency Directive (DTR 5)(x) 3. Full name of person(s) subject to the notification obligation: Herald Investment Management Limited 4. Full name of shareholder(s) (if different from 3.): Not needed 5. Date of the transaction (and date on which the threshold is crossed orreached if different): N/A see other above 6. Date on which issuer notified: 20th March 2007 7. Threshold(s) that is/are crossed or reached: 8% 8. Notified details: A. Voting rights attached to shares Class/type of shares (if possible using the ISIN code) Situation previous to the Resulting situation after the triggering transactiontriggering transactionNumber of Number of Number of Number of voting rights % of voting rights Voting Rights sharesShares Direct Direct Indirect Direct Indirect GB0000462191 4,590,824 4,590,824 4,590,824 8.60% (8.60%) (8.60%) B. Financial Instruments Resulting situation after the triggering transaction Type of financial Expiration date Exercise/ Conversion Number of voting % of voting rightsinstrument Period/Date rights that may be acquired if the instrument is exercised/ converted Total (A+B) Number of voting rights % of voting rights4,590,824 8.60% 9. Chain of controlled undertakings through which the voting rights and/ or the financial instruments are effectively held, if applicable: Herald Investment Management Limited, a discretionary investment manager, isthe parent undertaking of an investment business. Herald Investment Trust (in the name of Bank of New York (OCS Nominees Limited) 4,590,824 8.60%Total for Funds under the management of Herald Investment Management Limited 4,590,824 8.60% 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: Andrew Miller 15. Contact telephone number: 020 7553 6308 This information is provided by RNS The company news service from the London Stock ExchangeRelated Shares:
OSG.L