Notifiable Interests

microgen

Information Management Solutions

www.microgen.co.uk

9 August 2004

Microgen plc

Notifiable Interests

The Company was notified on the 5th August 2004 that under Sections 198-202 of
the Companies Act 1985, Herald Investment Trust plc is interested in 4,187,932
Ordinary Shares representing 4.82% of the issued share capital.

If you require further information please contact:

G.E. Liddle, Company Secretary [phone]