Placing and Holding in Co.

Stem Cell Sciences plc
15 August 2005



                    Stem Cell Sciences plc (the "Company")



Additional Shares to be Admitted to AIM

On 12 August 2005 the Company issued 411,094 Shares to Collins Stewart Limited.

The 411,094 Shares were issued in satisfaction of a corporate finance fee and
commission due to Collins Stewart Limited by the Company of an aggregate of
£398,762 at the price of £0.97 per share pursuant to the terms of the Placing
Agreement.

The 411,094 Shares rank pari passu in all respects with the Shares already
admitted to trading and will be admitted to trading on 18 August 2005.


Substantial Shareholdings

The Company received notification on 15 August 2005 from Collins Stewart Limited
pursuant to s198 of the Companies Act 1985 of its interest in Ordinary Shares of
£0.50 (the "Shares")  in the capital of the Company.

The notification referred to the allotment of 411,094 Shares to Collins Stewart
Limited.  Following the allotment of 411,094 Shares on 12 August 2005 referred
to in the notification Collins Stewart had an interest in 1,809,242 Shares
representing 8.13% of the issued share capital of the Company.

The 411,094 Shares were allotted in satisfaction of a corporate finance fee and
commission due to Collins Stewart Limited by the Company of an aggregate of
£398,762 at the price of £0.97 per share pursuant to the terms of the Placing
Agreement


Stem Cell Sciences plc                                    0131 662 9829
Hugh Ilyine

Collins Stewart Limited                                   020 7523 8350
Tim Mickley


15 August 2005



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