Directorate Change and Trading Update

Embargoed for release at 7.00am on 26 July 2007

                                  Corero plc                                   

                          ("Corero" or "the Company")                          

                     Directorate Change and Trading Update                     

Corero plc, the specialist provider of software solutions to the banking &
securities and education markets, announces a number of changes to its Board.

On 29 March 2007, in our final results announcement for the year ended 31
December 2006, we described how Corero had been restructured into two operating
divisions. These are the Financial Markets division, which comprises the Blue
Curve and Radica product lines, and the Business Systems division, which
comprises the Eclipse and Resource products focused on the public sector, in
particular the education market.

This structure is designed to allow each division the operational freedom
necessary to achieve organic growth in their respective markets. To complete
our restructuring, we are pleased to announce two appointments to the Board.
Mark Robertson, the co-founder of Blue Curve, joins the Board as the Managing
Director of the Financial Markets division, and Bernard Snowe joins the Board
as the Managing Director of the Business Systems division. Further information
on Mr Robertson and Mr Snowe, in accordance with the AIM Rules, is set out as a
footnote to this announcement.

With each of our two divisions now headed by main Board managing directors, we
do not believe a separate CEO position is currently necessary. Consequently,
Peter Waller, previously Non Executive Chairman, has been appointed Executive
Chairman and Jarlath McGee has agreed to resign as Chief Executive and step
down from the Board. He will remain with the company in a consultancy role for
the next three months. The Board takes this opportunity to express its
gratitude to Jarlath for his significant contribution to the business in his
seven years with the Company. The above changes are effective immediately.

Trading Update

The Company's trading performance for the six months to 30 June 2007 has been
below our expectations. Revenues were approximately comparable to those in the
first half of 2006. This was in large part due to a customer delay within the
Financial Markets division, as disclosed previously, which has slowed the
implementation of certain key projects and has also delayed certain licence
extensions.

The Business Systems division has traded strongly, having signed twelve new
name clients since the start of the year, including nine more City Academies.

Costs increased compared to the first half of 2006 due to planned investment
necessary for the continued growth of the Financial Markets division. Central
costs increased compared to those in 2006 due to investment in infrastructure
made in the second half of 2006 and the cost of the re-branding exercise
carried out in early 2007. The company therefore expects to report a loss after
interest for the six month period.

Our interim results for the six months to 30 June 2007 will be announced at the
end of September and will be reported for the first time under International
Financial Reporting Standards.

Outlook

As a result of the delayed contract and associated services revenues, combined
with further delays in the market for corporate actions solutions, we believe
it is prudent to reduce expectations for the year to 31 December 2007. As ever
the full year outlook depends on our ability to recognise significant licence
sales from new and existing customers, however, we still expect that our
forecast sales, committed projects and cost reductions through restructuring
will produce a strong second half with annual revenues ahead of those in 2006.

Contacts                                                                       
                                                                               
Corero PLC                                                                     
                                                                               
Peter Waller (Executive Chairman)                                  07785 228080
                                                                               
Ian Selby (Finance Director)                                       01923 695191
                                                                               
John East and Partners Limited                                    0207 628 2200
                                                                               
John East/Virginia Bull                                                        
                                                                               
College Hill Associates                                           0207 457 2020
                                                                               
Matthew Smallwood/Jamie Ramsay                                                 

26 July 2007

Additional Information

Mark Robertson, aged 39, is currently a director of Blue Curve Limited, Blue
Curve North America Inc, Blue Curve Research.Net Limited, Corero Systems
Limited and Hillgate 255 Limited. Mr Robertson was formerly a director of
Appareo Limited.

Mr Robertson currently holds 4,591,484 ordinary shares in the Company,
equivalent to 10.08 per cent. of the issued voting share capital. In addition,
Mr Robertson has options over 488,992 ordinary shares in the Company.

Bernard Patrick Snowe, aged 48, currently holds 40,000 ordinary shares in the
Company, equivalent to 0.09 per cent. of the issued voting share capital. In
addition, Mr Snowe has options over 488,992 ordinary shares in the Company.

Mr Robertson and Mr Snowe have confirmed that there is no further information
required to be disclosed under Rule 17 of the AIM Rules.