microgen

Information Management Solutions

www.microgen.co.uk

13 January 2004

Microgen plc

Notifiable Interests

The Company was notified today that under Sections 198-202 of the Companies Act
1985, Schroder Investment Management Limited is interested in 12,987,814
Ordinary Shares representing 14.94% of the issued share capital.

The shares are registered or to be registered in the name of:

No. of shares

Chase Nominees Limited TOTAL 6,772,093

Schroder Nominees

British Coal Staff Superannuation a/c: P 3,151,318

Mineworkers' Pension Scheme a/c: R 3,064,403

TOTAL 6,215,721

If you require further information please contact:

G.E. Liddle, Company Secretary (01753) 847155



END