Offer Withdrawal

microgen

Information Management Solutions

www.microgen.co.uk

13 May 2005

                       Withdrawal of Offer for AttentiV                        

On 5 May 2005, Microgen plc ('Microgen') announced that the Board considered
that it was not in Microgen shareholders' interests to increase the value of
its proposed offer for AttentiV Systems Group plc ('AttentiV'). Further to that
announcement and the subsequent posting to AttentiV shareholders of an
increased recommended cash offer document by TietoEnator on 6 May 2005,
Microgen today announces that it is withdrawing its proposed offer for AttentiV
which was first announced on 28 April 2005. In due course, Microgen should be
entitled to an inducement fee from AttentiV as detailed in the announcement
dated 28 April 2005.

Enquiries:

Mike Phillips, Group Finance Director   01753 847122                           
                                                                               
Nick Adams, UBS Investment Bank         020 7567 8000                          
                                                                               
Giles Sanderson, Financial Dynamics     020 7831 3113