IDH.L Regulatory News (IDH)

Immunodiagnostic Systems Holdings PLC ("IDS" or "the Company")

28 April 2011

VOTING RIGHTS AND CAPITAL

IDS, a leading producer of diagnostic testing kits, makes the following announcement in accordance with the Disclosure and Transparency Rules.

The Company's issued share capital consists of 28,236,915 ordinary shares with a nominal value of 2p each ('Ordinary Shares'). The Company does not hold any Ordinary Shares in Treasury.

Therefore, the total number of voting rights in the Company is 28,236,915.

The figure of 28,236,915 may be used by shareholders as the denominator for the calculations by which they will determine if they are required to notify their interest in, or a change to their interest in, the Company under the FSA's Disclosure and Transparency Rules.

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