Adventis Group plc (“Adventis Group plc” or “the Company”)

10 April 2008

FINAL DIVIDEND

Further to the announcement today of the Company’s preliminary results for the year ended 31
December 2007 (“Final Results”), Adventis Group plc confirms that the recommended final dividend of
0.484p per share will be paid on 27 June 2008 to shareholders on the register on 6 June
2008, subject to approval at the Company’s Annual General Meeting on 29 May 2008.

Enquiries:

Adventis Group plc
Peter Linnell, Finance Director Tel: 020 7034 4795
Adventis Group plc Financial PR
Chris Steele Tel: 020 7034 4759
Tarquin Edwards Tel: 020 7034 4758
Arbuthnot Securities
Tom Griffiths Tel: 020 7012 2000