Director/PDMR Shareholding

Stem Cell Sciences plc
25 March 2008



Press Release

For Immediate Release                                         25th 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 20th 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)                            [phone]
David Newton, Joint Company Secretary (Australia)     [phone]




                      This information is provided by RNS
            The company news service from the London Stock Exchange