Notifiable Interests

microgen

Information Management Solutions

www.microgen.co.uk

5 August 2004

Microgen plc

Notifiable Interests

The Company was notified on the 4th August 2004 that under Sections 198-202 of
the Companies Act 1985, Aberforth Smaller Companies Trust plc is interested in
2,855,100 Ordinary Shares representing 3.28% of the issued share capital.

The shares are registered in the name of:

No. of shares

Clydesdale Bank (Head Office) Nominees Limited

A/C ABERFIT1 2,855,100

If you require further information please contact:

G.E. Liddle, Company Secretary [phone]