Customer Agreement

Avacta Group plc

Delivery of prototype mobile chemical detection system to MOD Porton Down

Avacta Group plc ("Avacta"), which develops detection and analysis technology
aimed at the pharmaceutical, diagnostics and defence & security markets,
announces it has successfully delivered on its contract with the UK Ministry of
Defence Laboratories at Porton Down. As announced on 3 September 2007, Avacta
entered into a contract with the Defence Science and Technology Laboratory
(Dstl) to develop a prototype device for mobile detection of chemicals in the
field using its laser detection and diagnostic technology.

Avacta completed its development work on schedule and has delivered the
technology to the MOD for testing. The aim is to provide improved capabilities
for the identification of chemicals at a safe distance which could be of
significant benefit to the homeland security and defence sectors.

The Directors believe that there are commercialisation opportunities for Avacta
both in military and civilian markets, as the rapid detection of unknown
substances at a safe distance could have numerous applications and strong
demand.

Professor Alastair Smith, Chief Executive, Avacta, commented:

"The development team has done an outstanding job to deliver a complex and
advanced system on time to the MOD and is expecting a positive outcome
following the testing now being undertaken. We are working with Porton Down
throughout this phase and are excited about developing the final product for
use in the field.

This long range chemical identification system could be of great benefit to
security and defence operations world wide. It is one of several product
developments in Avacta for portable chemical and biological threat detection
that I am delighted to report are progressing well and generating strong
interest in the market".

                                                                   11 July 2008

Enquiries:

Avacta Group plc                       Tel: [phone]                    
                                                                             
Alastair Smith, Chief Executive                                              
Officer                                                                      
                                                                             
Tim Sykes, Chief Financial Officer                                           
                                                                             
Haggie Financial LLP                   Tel: [phone]                    
                                                                             
Nicholas Nelson / Kathy Boate          [e-mail]          
                                                                             
WH Ireland Limited                     Tel: [phone]                    
                                                                             
David Youngman                                                               
                                                                             
Novum Securities Limited               Tel: [phone]                    
                                                                             
Henry Turcan / Michael Brennan                                               

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.