Commencement of Dealings on The AIM Market

Byotrol plc
                  

NEWS RELEASE

FOR IMMEDIATE RELEASE (Release Date: 6 July, 2005)

Byotrol plc

First day of dealings on the AIM market

Byotrol plc ('Byotrol' or the 'Company') announces the admission of its ordinary
shares to trading on the AIM market following the raising of £3m pursuant to a
placing at 23 pence per share ('the Placing').

Byotrol is a biocide technology company that has developed and patented a new
class of biocide that can combat the spread of a broad spectrum of
micro-organisms and bacteria including MRSA, E. coli and Legionella. Products
based upon the Company's technology offer a number of benefits over conventional
anti-microbial products because they can deal effectively with drug resistant
strains, provide continuing protection even after they dry, are virtually
harmless to humans and animals and are formulated from substances which have a
very low environmental impact.

Merchant Capital plc is acting as Financial Adviser to the Company, Matrix
Corporate Finance is the Nominated Adviser and Fiske is the broker.

Commenting, David McRobbie, Chief Executive Officer of Byotrol said, 'We are
delighted with the success of the Placing in what is currently a challenging
marketplace and how our innovative approach to microbial control has been
received both by private and institutional investors. The Placing will enable us
to fund regulatory approvals and further expansion across our core markets. This
is an important milestone for Byotrol and we are looking forward to the next
stage of the Company's development.'

Enquiries:

Byotrol plc tel:
Stephen Falder, Deputy Chairman
[phone]

Merchant Capital plc tel: [phone]
Nick Rodgers or Oli Rayner

McCann Erickson PR tel + 44 (01625 822200)
Jim Rothnie

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