Director/PDMR Shareholding

9 May 2011

For immediate release

Biome Technologies plc

 ("Biome" or "the Company")

Director/PDMR Shareholding

Biome was notified on 6 May 2011 of the following purchases by directors.

John F Standen, non-executive Chairman, purchased 1,463,118 ordinary shares at 0.24 pence per share on 6 May 2011. Following this transaction, John Standen's total shareholding in Biome is 25,708,168 ordinary shares, representing 0.44% of the ordinary issued share capital of the Company.

Paul Mines, Chief Executive, purchased 1,105,583 ordinary shares at 0.24 pence per share on 6 May 2011. Following this transaction, Paul Mines' total shareholding in Biome is 50,403,192 ordinary shares, representing 0.86% of the ordinary issued share capital of the Company. In addition, Paul Mines has unexercised options over 144,372,636 ordinary shares in aggregate. Paul Mines also has an interest in the Company's shares through his participation in the Company's Public Equity Plan (further information is set out in the Company's Annual Report and Financial Statements).

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For further information please contact:

Biome Technologies plc

Paul Mines, Chief Executive Officer

Sue Bygrave, Group Finance Director

www.biometechnologiesplc.com Tel: +44 (0) 2380 867 100

Daniel Stewart & Company plc

Oliver Rigby (Nomad)

Martin Lampshire (Broker)

www.danielstewart.co.uk Tel: +44 (0) 20 7776 6550

First Columbus

John Nuttall/Chris Crawford/Kelly Gardiner

www.first-columbus.com Tel: +44 (0) 20 3002 2070

Financial Dynamics

Oliver Winters Tel: +44 (0) 20 7831 3113

Notes to Editors

Admitted to AIM in July 2010, the activities of Biome operate in two divisions; Bioplastics and Stanelco RF Technologies. Both divisions are underpinned by the Group's skills in the commercialisation and development of innovative technology.

The Group's core strategy is to develop and broaden its bioplastics business organically and is engaged with a variety of large-scale international customers and partners on a number of key commercial and development partnerships. These target applications in the food, horticulture and the electronics markets, amongst others, further enhance the Group's existing and new product development.