Director/PDMR Shareholding

Synairgen plc
31 October 2007

Synairgen plc ('Synairgen' or the 'Company')

Director Shareholdings


The Company was informed on 31 October 2007 that Richard Marsden, Managing
Director of Synairgen, had been granted options on 30 October 2007 over 129,853
ordinary shares of 1 pence each ('Ordinary Shares') in the Company under the
Company's Long-Term Incentive Plan (the 'LTIP') at an exercise price of 1 pence
per share.

Mr Marsden's holding in options over Ordinary Shares has therefore increased to
944,288, representing approximately 4.35 per cent. of the issued ordinary share
capital of the Company.

The Company was informed on 31 October 2007 that John Ward, Finance Director of
Synairgen, had been granted options on 30 October 2007 over 118,048 Ordinary
Shares in the Company under the Company's LTIP at an exercise price of 1 pence
per share.

Mr Ward's holding in options over Ordinary Shares has therefore increased to
631,723, representing approximately 2.91 per cent. of the issued ordinary share
capital of the Company.




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