Additional Listing

Byotrol PLC
08 February 2007

                          Byotrol plc (the 'Company')

                               Additional Listing


The Board announces that following the exercise of warrants 95,200 ordinary
shares in the Company have been issued.


In addition, the Board announces that 14,000 new ordinary shares in the Company
have been issued to a new employee of the Company and 1,500 new ordinary shares
each have been issued to Professor Curtis Gemmell and Dr Ralph Portier, both of
whom are advisers to the Company.


Accordingly, application has been made for 112,200 new ordinary shares to be
admitted to trading on AIM and it is expected that admission will take place on
14 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 43,400,049 ordinary shares.




8 February 2007


Enquiries:

Charles Stanley Securities                                  020 7149 6457
Philip Davies




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