Holding(s) in Company

6 November 2008

Microgen plc (the "Company")

Notifiable Interests

The Company received notice on 5 November 2008 in compliance with the
Disclosure and Transparency Rules that Aberforth Partners LLP holding
of 20,451,277 Ordinary Shares now represents 19.87% of the issued share capital
of the Company which is currently 102,909,776 Ordinary Shares.

Aberforth Partners is interested in 17,780,577 of the voting rights of these
Ordinary Shares representing 17.28% of the issued share capital of the Company.
The shares are registered in the name of:

                                                               No. of shares
                                                                            
Aberforth Smaller Companies Trust plc                              9,706,126
                                                                            
(Nortrust Nominees Ltd A/c Aberfrth)                                        
                                                                            
Aberforth UK Small Companies Fund                                  5,216,351
                                                                            
(Nortrust Nominees Ltd A/c Aberfrth)                                        
                                                                            
The Church Commissioners for England                               1,471,800
                                                                            
(The Church Commissioners for England (Chase GIS) Nominees Ltd 

Aberforth Geared Capital & Income Trust plc                        1,386,300

If you require further information please contact:

A. Siddiqi, Company Secretary Tel: [phone]

www.microgen.com