Exercise of Warrants

29 April 2010

Cellcast plc

("Cellcast" or the "Company")

Exercise of Warrants

Cellcast plc announces that on 27 April 2010 Headstart Funds ("Headstart") have exercised 500,000 warrants over new ordinary shares of 1p each in Cellcast at an exercise price of 2.75 pence per share. Prior to the exercise of the warrants Headstart held no shares in Cellcast. Application will be made for the 500,000 new ordinary shares in Cellcast to be admitted to trading on AIM ("Admission") and it is expected that Admission will take place on or around 05 May 2010.

On Admission Cellcast will have 76,013,524 ordinary shares of 1p each in issue. This figure may be used by shareholders in the Company 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 share capital of the Company under the Financial Services Authority's Disclosure and Transparency Rules.

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