PDMR Shareholding

microgen

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www.microgen.co.uk

15th June 2006

                                 Microgen plc                                  

                          Director/PDMR Shareholding                           

This notification is made in accordance with DR 3.1.4R (1) (a):

Further to shareholder approval received at the Company's Annual General
Meeting held on 11th May 2006 to adopt the Microgen Performance Share Plan 2006
(the "Plan") awards of options over Ordinary Shares of 5p each were made on
15th June 2006 to the following PDMRs:


Name of PDMR:                         Tom Crawford                             
                                                                               
Date of Grant:                        15 June 2006                             
                                                                               
Date on which it can be exercised:    15 June 2009                             
                                                                               
Total amount paid (if any) for grant                                        
of option:                            NIL                                         
                                                                               
Description of shares involved:       30,000 Ordinary Shares of 5p each        
                                                                               
Exercise price in pence:              5p                                       
                                                                               
Total Number of Shares over which     
Options held following this                                                    
notification:                         170,000                                  

                                         

Name of PDMR:                         Elizabeth Sipiere                        
                                                                               
Date of Grant:                        15 June 2006                             
                                                                               
Date on which it can be exercised:    15 June 2009                             
                                                                               
Total amount paid (if any) for grant                                        
of option:                            NIL                                         
                                                                               
Description of shares involved:       100,000 Ordinary Shares of 5p each       
                                                                               
Exercise price in pence:              5p                                       
                                                                               
Total Number of Shares over which                                       
Options held following this                                                    
notification:                         100,000                                         



Name of PDMR:                         Clare Groom                              
                                                                               
Date of Grant:                        15 June 2006                             
                                                                               
Date on which it can be exercised:    15 June 2009                             
                                                                               
Total amount paid (if any) for grant  
of option:                            NIL                                                                               
                                                                       
Description of shares involved:       30,000 Ordinary Shares of 5p each        
                                                                               
Exercise price in pence:              5p                                       
                                                                               
Total Number of Shares over which     
Options held following this                                                    
notification:                         150,000                                                                           


Name of PDMR:                         Gerry Liddle                             
                                                                               
Date of Grant:                        15 June 2006                             
                                                                               
Date on which it can be exercised:    15 June 2009                             
                                                                               
Total amount paid (if any) for grant  NIL                                      
of option:                                                                     
                                                                               
Description of shares involved:       30,000 Ordinary Shares of 5p each        
                                                                               
Exercise price in pence:              5p                                       
                                                                               
Total Number of Shares over which     
Options held following this                                                    
notification:                         225,000                                                                           



Name of PDMR:                         Neil Thomson                             
                                                                               
Date of Grant:                        15 June 2006                             
                                                                               
Date on which it can be exercised:    15 June 2009                             
                                                                               
Total amount paid (if any) for grant  
of option:                            NIL                                                                               
                                                                               
Description of shares involved:       30,000 Ordinary Shares of 5p each        
                                                                               
Exercise price in pence:              5p                                       
                                                                               
Total Number of Shares over which                                       
Options held following this                                                    
notification:                         195,000                                         



If you require further information please contact:

G.E. Liddle, Company Secretary 01252 772 313