Holding(s) in Company

25th February 2008

Microgen plc (the "Company")

Notifiable Interests

The Company received notice from Schroders Investment Management Limited on
25th February 2008 in compliance with the Disclosure and Transparency Rules
that its holding of 15,206,591 Ordinary Shares now represents 14.78% of the
issued share capital of the Company.

The shares are held in portfolios managed on a discretionary basis for clients
under investment management agreements.

If you require further information please contact:

G.E. Liddle, Company Secretary

Tel: [phone]

www.microgen.com