Director/PDMR Shareholding

 Byotrol plc

(the "Company")

Director's Holdings in Company

Further to the announcement made on 9 August 2013, Byotrol plc was notified on 12 August 2013 that, on that date, Maunby Investment Management Ltd ("Maunby") disposed of a further 250,000 ordinary shares of 0.25p each in the capital of the Company ("Ordinary Shares").

This disposal was also on behalf of Fund JF1, a fund administered by Jervaulx Capital ("Jervaulx"). Nicholas Martel, non-executive director of Byotrol, has a controlling interest in Jervaulx but is not a director of Jervaulx.

Following this latest transaction, Maunby now holds 24,999,709 Ordinary Shares representing 16.7 per cent of the Company's issued share capital.

Further, following this transaction, Nicholas Martel has a personal beneficial interest in 1,400,000 Ordinary Shares equating to 0.9 per cent. of the Company's issued share capital. Mr Martel also has a non-beneficial interest in 17,693,513 Ordinary Shares equating to 11.8 per cent of the Company's issued share capital.

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