Notifiable Interest

17 Sep 2007 15:33

Immunodiagnostic Systems Hldgs PLC17 September 2007 Immunodiagnostic Holdings PLC ("the Company") Notifiable Interest A form TR-1 containing the following information has been received by theCompany. TR-1 notification of major interests in shares 1. Identity of the issuer or the underlying issuer of existing shares to whichvoting rights are attached: Immunodiagnostic Systems Holdings Plc 2. Reason for the notification purchase of shares 3. Full name of person(s) subject to the notification obligation: Forum Venture Capital GmbH 4. Full name of shareholder(s) (if different from 3): n/a 5. Date of the transaction (and date on which the threshold is crossed orreached if different): 28th of August 2007 6. Date on which issuer notified: 13th of September 2007 7. Threshold(s) that is/are crossed or reached: 9% 8. Notified details: A: Voting rights attached to sharesClass/type of Situation previous to Resulting situation after the triggering transactionshares Triggering transaction Notification required under DTR transitional provision 7if possible usingISIN CODE Number of Number of Number of Number of voting % of voting rights Shares Voting shares rights Rights Direct Direct Indirect Direct Indirect GB00Bo1YZ052 - - 2,341,660 2,341,660 - 9.77% - B: Financial InstrumentsResulting situation after the triggering transaction Type of financial Expiration date Exercise/ Number of voting % of voting rightsinstrument Conversion Period/ rights that may be Date acquired if the instrument is exercised/ converted shares Total (A+B)Number of voting rights % of voting rights 2.341.660 9.77% 9. Chain of controlled undertakings through which the voting rights and/or thefinancial instruments are effectively held, if applicable: n/a 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: n/a 14. Contact name: Dr Burkhard Wittek 15. Contact telephone number: +49 89 273749 0 This information is provided by RNS The company news service from the London Stock Exchange