Change of Adviser

Avacta Group plc                                

                          ("Avacta" or "the Company")                          

                               Change of Adviser                               

Avacta Group plc (Stock Code: AVCT.L), an AIM listed company which provides
novel detection and analysis technology for the pharmaceutical, defence/
security and clinical diagnostics markets, announces that it has appointed
Daniel Stewart & Company plc as the Company's Nominated Adviser and Joint
Broker with immediate effect. Novum Securities Limited continues to act as
Joint Broker.

13 October 2008

Enquiries:

Avacta Group plc                        Tel: [phone]                     
                                                                               
Alastair Smith, Chief Executive Officer                                        
                                                                               
Tim Sykes, Chief Financial Officer                                             
                                                                               
www.avacta.com                                                                 
                                                                               

Daniel Stewart & Company plc            Tel: [phone]                     
                                                                               
Lindsay Mair/Tessa Smith                                                       
                                                                               
www.danielstewart.co.uk                                                        
                                                                               

Novum Securities Limited                Tel: [phone]                     
                                                                               
Henry Turcan/Michael Brennan                                                   
                                                                               

Haggie Financial LLP                    Tel: [phone]                     
                                                                               
Nicholas Nelson/Kathy Boate             [e-mail]           



Notes to Editors:

About Avacta

Avacta was spun-out from the University of Leeds in 2004 by its current
management team as a biophysics company, with the aim of combining the
disciplines of physics and biology to develop innovative technologies and
expert technical services to address needs in the pharmaceutical, defence and
clinical diagnostics markets. Avacta has a core bio-analytical technology
development programme addressing the needs of the biopharmaceutical sector to
fully characterise their new products at the earliest stage in their
development to reduce the risk of late stage failure. High value solutions in
defence and clinical diagnostics are also being provided by these core
bio-analytical technologies. A successful and growing part of the Avacta
business model is its technical services arm, Avacta Analytical Ltd, which is
focused on providing leading edge contract research to the biopharmaceutical
and healthcare/personal-care materials sectors. Avacta listed on AIM in August
2006 through the reverse takeover of Readybuy plc which changed its name to
Avacta Group plc.