Additional Listing

Byotrol PLC
23 February 2007

                          Byotrol plc (the 'Company')

                               Additional Listing

The Board announces that following the exercise of warrants 178,728 ordinary
shares in the Company have been issued.

Accordingly, application has been made for 178,728 new ordinary shares to be
admitted to trading on AIM and it is expected that admission will take place on
27 February 2007.

The new ordinary shares will rank pari passu with the existing shares of the
Company. Following this allotment, the total issued share capital of the Company
will increase to 43,578,777 ordinary shares.

23 February 2007

Enquiries:

Charles Stanley Securities                                  020 7149 6109
Anthony Noakes




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