Transaction in Own Shares

Genus PLC
25 November 2004


Genus plc ('the Company')

Treasury Shares

The Company announces that further to its stated intention to restructure the
Share Register, as announced in the Interim Results on 17 November 2004, under
the terms of the voluntary buy-back scheme aimed at smaller shareholders in the
Company, on 23 November 2004 it purchased 137,197 ordinary shares of 10p each at
263.5p per share for holding as Treasury.

Today the Company has purchased a further 362,298 ordinary shares of 10p each at
263.5p per share for holding as Treasury.

It is the Company's intention to follow the buy-back scheme with a placing of
shares acquired under the facility to meet institutional demand.

The issued share capital of the Company is 36,561,542 shares including 499,495
(1.36%) Treasury shares.

For reporting purposes under section 198 of the Companies Act 1985 the market
should exclude any shares held in treasury and should use a figure of 36,062,047
shares.

25 November 2004

Enquiries:

Genus plc                                                    Tel: [phone]
                                                                       
Richard Wood, Chief Executive, Genus plc
David Timmins, Group Finance Director, Genus plc




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