AIM - Director's Dealing

Press Release

25^th March 2008

Stem Cell Sciences plc

Director's Dealing

Stem Cell Sciences plc (SCS, AIM:STEM, ASX:STC) announces that it received notification regarding a completed share transfer transaction on 20^th March 2008. Dr Peter Mountford, a non-executive director of SCS, through Secure Sciences Pty Ltd, a company in which he is also a Director and holds a controlling interest, has transferred ordinary shares at nil consideration to the following parties:

Northrock Group Pty Ltd  

47,972 shares (0.143% of issued share capital)

Forty Second Shelley Nominees Pty Ltd  

11,993 shares (0.036% of issued share capital)

Following the share transfers, Dr Mountford through Secure Sciences Pty Ltd, holds a beneficial interest in SCS of 2,668,633 shares representing 7.96% of the issued share capital.

- Ends -

For further information, please contact:

Stem Cell Sciences plc

Alastair Riddell, CEO (UK)                                                         +44 (0)1223 499160

David Newton, Joint Company Secretary (Australia)                  +61 (0)3 9905 0600