Notifiable Interests

microgen

Information Management Solutions

www.microgen.co.uk

19th September 2005

Microgen plc (the 'Company')

Notifiable Interests

The Company received notice on 16th September 2005 under Sections 198-202 of
the Companies Act 1985 that Aberforth Partners is interested in 14,238,151
Ordinary Shares representing 13.91% of the issued share capital of the Company,
which is currently 102,327,567 Ordinary Shares.

The shares are registered in the name of:

                                                                  No. of shares
                                                                               
Nortrust Nominees Limited A/C ABERFRTH                               11,474,651
                                                                               
Bank of Ireland Nominees Limited                                        719,900
                                                                               
The Church, Commissioners for England (Chase                            955,200
GIS) Nominees Limited                                                          
                                                                               
State Street Nominees Limited A/C JD59                                1,088,400
                                                                               
                                                                     14,238,151

If you require further information please contact:

G.E. Liddle, Company Secretary

Tel: [phone]


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