Notifiable Interests

microgen

Information Management Solutions

www.microgen.co.uk

30th September 2004

Microgen plc

Notifiable Interests

The Company was notified on the 29th September 2004 that under Sections 198-202
of the Companies Act 1985 Aberforth Partners is interested in 10,753,651
Ordinary Shares representing 10.59% of the enlarged issued share capital in the
Company following the acquisition of AFA Systems plc.

The shares are registered in the name of:

Aberforth Smaller Companies Trust plc No. of shares

Clydesdale Bank (Head Office) Nominees Limited

A/C ABERFIT1 4,477,600

Others

Clydesdale Bank (Head Office) Nominees Limited

A/C ABERFUT1 4,676,651

The Church Commissioners for England (Chase GIS) Nominees

Limited 747,500

State Street Nominees Ltd A/C JD59 851,900

10,753,651

If you require further information please contact:

G.E. Liddle, Company Secretary [phone]