Notifiable Interests

microgen

Information Management Solutions

www.microgen.co.uk

16th August 2006

Microgen plc (the "Company")

Notifiable Interests

The Company received notice on 16th August 2006 under Sections 198-202 of the
Companies Act 1985 that Aberforth Partners LLP is interested in 16,688,151
Ordinary Shares representing 16.26% of the issued share capital of the Company,
which is currently 102,641,214 Ordinary Shares.

The shares are registered in the name of:

                                                                  No. of shares
                                                                               
Nortrust Nominees Limited A/C ABERFRTH                               13,741,451
                                                                               
Bank of Ireland Nominees Limited                                        719,400
                                                                               
The Church Commissioners for England (Chase GIS)                      
Nominees Limited                                                      1,045,100         
                                                                               
State Street Nominees Limited A/C JD59                                1,182,200
                                                                               
                                                                     16,688,151

If you require further information please contact:

G.E. Liddle, Company Secretary

Tel: [phone]