Holding(s) in Company

Informa PLC
28 April 2008


TR-1: Notifications of Major Interests in Shares


1. Identity of the issuer or the underlying issuer of         INFORMA PLC
existing shares to which voting rights are attached:


2. Reason for notification (yes/no)


An acquisition or disposal of voting rights                                                  YES


An acquisition or disposal of financial instruments which may result in the acquisition
of shares already issued to which voting rights are attached


An event changing the breakdown of voting rights


Other (please specify):______________


3. Full name of person(s) subject to notification    FMR LLC
obligation:


4. Full name of shareholder(s) (if different from    SEE SECTION 9 BELOW
3):


5. Date of transaction (and date on which the        22 APRIL 2008
threshold is crossed or reached if different):


6. Date on which issuer notified:                    25 APRIL 2008




7. Threshold(s) that is/are crossed or reached:      10.14%


8: Notified Details
A: Voting rights attached to shares


Class/type of       Situation previous to the   Resulting situation after the triggering transaction
shares              triggering transaction
                    Number of     Number of     Number of   Number of voting rights Percentage of voting
If possible use     shares        voting rights shares                              rights
ISIN code

                                                            Direct     Indirect     Direct    Indirect
GB0002625654        41,645,004    41,645,004                           43,121,796             10.14%


B: Financial Instruments


Resulting situation after the triggering transaction


Type of financial    Expiration date      Exercise/ conversion No. of voting rights  Percentage of voting
instrument                                period/date          that may be acquired  rights
                                                               (if the instrument
                                                               exercised/converted)







Total (A+B)


Number of voting rights                              Percentage of voting rights


43,121,796                                           10.14%




9. Chain of controlled undertakings through which the voting rights and /or the financial instruments are effectively
held, if applicable:


FMR LLC is the parent holding company of Fidelity Management & Research Company (FMRCO), Investment manager for US
mutual funds, and Fidelity Management Trust Company (FMTC) and Pyramid Global Advisors Trust Company (PGATC), a US
state chartered bank which acts as a trustee investment manager of various pension and trust accounts and Pyramid
Global Advisors LLC (PGALLC), holds:

550,700 shares in nominee: Brown Brothers Harriman and Co (Management Company is FMRCO)
777,000 shares in nominee: JP Morgan Chase Bank (Management Company is FMR)
31,039,806 shares in nominee: JP Morgan Chase Bank (Management Company is FMRCO)
1,018,000 in nominee: Mellon Bank N.A. (Management Company is FMRCO)
5,267,100 shares in nominee: Northern Trust Co (Management Company is FMRCO)
4,384,090 shares in nominee: State Street Bank and TR CO (Management Company is FMRCO)
12,400 shares in nominee: State Street Bank and TR CO (Management Company is FMTC)
72,700 shares in nominee: CIBC Mellon Trust (C) (Management Company is FCL)


Proxy Voting:


10. Name of proxy holder:                            FMR LLC


11. Number of voting rights proxy holder will cease  1,476,792 SHARES
to hold:


12. Date on which proxy holder will cease to hold    22 APRIL 2008
voting rights:




13. Additional information:                           N/A


14 Contact name:                                      DAVID MERRYWEATHER


15. Contact:                                          [e-mail]






Annex: Notification of major interests in shares




A: Identity of the persons or legal entity subject to the notification obligation
Full name                                            INFORMA PLC

(including legal form of legal entities)


Contact address                                      37-41 MORTIMER STREET

(registered office for legal entities)               LONDON, W1T 3JH


Phone number & email                                 020 7017 4314

                                                     [e-mail]
Other useful information                             JULIE WILSON

(at least legal representative for legal persons)    DEPUTY COMPANY SECRETARY




B: Identity of the notifier, if applicable
Full name


Contact address


Phone number & email


Other useful information



(e.g. functional relationship with the person or
legal entity subject to the notification obligation)


C: Additional information



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