Notifiable Interest

21 Nov 2007 09:14

Immunodiagnostic Systems Hldgs PLC21 November 2007 Immunodiagnostic Systems 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): 14 November 2007 6. Date on which issuer notified: 20 November 2007 7. Threshold(s) that is/are crossed or reached: 14% 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 rights % of voting rights Shares Voting shares Rights Direct Direct Indirect Direct Indirect GB00B01YZ052 2,916,660 2,916,660 3,416,660 3,416,660 - 14.26% - 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 3,416,660 14.26% 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