Delisting of Datamonitor

Informa PLC
10 August 2007


 Not for release, publication or distribution in whole or in part, directly or  
indirectly, in or into or from the United States, Canada, Australia or Japan or 
  any jurisdiction where to do so would constitute a violation of the relevant  
                           laws of such jurisdiction                            


                                                                  10 August 2007 

                     Recommended cash Offer for Datamonitor                     


Informa plc - Delisting of Datamonitor plc

The directors of Datamonitor, a subsidiary of Informa plc, announce that, 
following applications to the UK Listing Authority and the London Stock 
Exchange, the listing of Datamonitor's ordinary shares of 10 pence each (the 
'Shares') on the Official List has been cancelled and the Shares have ceased 
trading on the London Stock Exchange, in each case with effect from 8 a.m. this
morning.

This follows the announcement by Informa plc on 13 July 2007 that the offer by
Informa Acquisitions for all of the issued and to be issued share capital of
Datamonitor had been declared unconditional in all respects.

Terms defined in the Offer Document dated 14 May 2007 have the same meaning in
this announcement.


Enquiries

Informa                                           Tel: [phone]
Peter Rigby
David Gilbertson
Anthony Foye
Susanna Kempe

Greenhill (financial adviser to Informa)          Tel: [phone]
Simon Borrows
Peter Bell

Maitland (PR adviser to Informa)                  Tel: [phone]
William Clutterbuck
Emma Burdett


Greenhill, which is authorised and regulated in the United Kingdom by the
Financial Services Authority, is acting exclusively for Informa and Informa
Acquisitions and no-one else in connection with the Acquisition and will not be
responsible to anyone other than Informa and Informa Acquisitions for providing
the protections afforded to clients of Greenhill nor for providing advice in
relation to the Acquisition or any other matters referred to in this
announcement.

LongAcre Partners, which is authorised and regulated in the United Kingdom by
the Financial Services Authority, is acting exclusively for Datamonitor and no
one else in connection with the Offer and will not be responsible to anyone
other than Datamonitor for providing the protections afforded to clients of
LongAcre Partners nor for providing advice in relation to the Offer.

This announcement has been prepared for the purpose of complying with English
law and the City Code and the information disclosed may not be the same as that
which would have been disclosed if this announcement had been prepared in
accordance with the laws of jurisdictions outside the UK.

The availability of the Offer to persons who are not resident in the United
Kingdom may be affected by the laws of the relevant jurisdiction in which they
are located. In particular, the Offer will not be made directly or indirectly
into the United States, Canada, Australia or Japan. Persons who are not resident
in the United Kingdom should inform themselves about, and observe, any
applicable legal or regulatory requirements.

Unless otherwise determined by Informa Acquisitions and permitted by applicable
law and regulation, the Offer is not being, and will not be, made, directly or
indirectly, in or into or by the use of the mails of, or by any other means
(including, without limitation, electronic mail, facsimile transmission, telex,
telephone, internet or other forms of electronic communication) of interstate or
foreign commerce of, or any facility of a national securities exchange of any
jurisdiction where to do so would violate the laws of that jurisdiction and will
not be capable of acceptance by any such use, means or facility or from within
any such jurisdiction. Accordingly, unless otherwise determined by Informa
Acquisitions, copies of this announcement are not being, and must not be,
directly or indirectly, mailed, transmitted or otherwise forwarded, distributed
or sent in, into or from any such jurisdiction and persons receiving this
announcement (including, without limitation, custodians, nominees and trustees)
must not mail or otherwise distribute or send it in, into or from such
jurisdiction, as doing so may invalidate any purported acceptance of the Offer.
Any person (including, without limitation, any custodian, nominee and trustee)
who would, or otherwise intends to, or who may have a contractual or legal
obligation to, forward this announcement and/or any other related document to
any jurisdiction outside the United Kingdom should inform themselves of, and
observe, any applicable legal or regulatory requirements of their jurisdiction.
 




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