Holding(s) in Company

Informa PLC
10 November 2006



             NOTIFICATION OF MAJOR INTERESTS IN SHARES


1)   NAME OF LISTED COMPANY


INFORMA PLC


2)   NAME OF SHAREHOLDER HAVING A MAJOR INTEREST


FMR CORP AND FIDELITY INTERNATIONAL LIMITED



3)   Please state whether notification indicates that it is 
     regarding the holding of the shareholder named in 2 above;
     in respect of a non-beneficial interest; or in the case of an
     individual holder if it is a holding of that person's spouse
     or children under the age of 18


NON-BENEFICIAL


4)   Name of the registered holder(s) and, if more than one holder, the 
     number of shares held by each of them.


SEE BELOW


5)   Number of shares/amount of stock acquired.


N/A


6)   Percentage of issued Class (any treasury shares held by the
     listed company should not be taken into account when
     calculating percentage)


N/A


7)   Number of shares/amount of stock disposed


4,722,788



8)   Percentage of issued Class (any treasury shares held by the
     listed company should not be taken into account when
     calculating percentage)


1.12%


9)   Class of security


ORDINARY SHARES OF 10 PENCE EACH


10)  Date of transaction


NOT KNOWN



11)  Date listed company informed


10 NOVEMBER 2006



12)  Total holding following this notification


28,663,649

               
13)  Total percentage holding of issued class following this notification
     (any treasury shares held by the listed company should not be taken
     into account when calculating percentage)


6.78%


14)  Any additional information


ISSUED SHARE CAPITAL = 422,953,162


15)  Name of contact and telephone number for queries


ANDREA CALLABY
020 7017 4311


16)  Name and signature of duly authorised officer of the listed company
     responsible for making this notification



     Date of Notification     10 NOVEMBER 2006



Schedule A                                                          Amendment 19

Security:  INFORMA PLC

Current ownership percentage:                        6.78%

Total Shares Held                                    28,663,649

Shares in issue:                                     422,953,162

Change in holdings since last filing:                (4,722,788) ordinary shares


                                                          MANAGEMENT
                                     SHARES HELD          COMPANY                    NOMINEE/REGISTERED NAME

                                       1,696,807                 FPM                 NORTHERN TRUST LONDON

                                         907,488                 FPM                 JP MORGAN, BOURNEMOUTH

                                         668,022                 FPM                 BANK OF NEW YORK BRUSSELS

                                         416,316                 FPM                 MELLON BANK

                                         216,000                 FPM                 CITIBANK LONDON

                                          43,290                 FPM                 STATE STR BK AND TR CO LNDN (S

                                          40,700                FMTC                 STATE STREET BANK AND TR CO

                                      16,758,700               FMRCO                 JP MORGAN CHASE BANK

                                       1,218,100               FMRCO                 STATE STREET BANK AND TR CO

                                          80,300               FMRCO                 BROWN BROTHERS HARRIMAN AND CO

                                       2,438,549                FISL                 JP MORGAN BOURNEMOUTH

                                       1,893,397                 FIL                 JP MORGAN BOURNEMOUTH

                                         502,600                 FIL                 BROWN BROS HARRIMN LTD LUX

                                          93,900                 FIL                 STATE STR BK AND TR CO LNDN (S

                                          32,470                 FIL                 MORGAN STANLEY LONDON

                                           7,200                 FIL                 NORTHERN TRUST LONDON

                                           4,200                 FIL                 BNP PARIBAS, PARIS

                                           3,600                 FIL                 BNP PARIBAS, PARIS (C)

                                           5,930                 FIJ                 BROWN BROTHERS HARRIMAN AND CO

                                       1,595,280                 FII                 BANK OF NEW YORK EUROPE LDN

                                          10,300              FIGEST                 CDC FINANCE

                                          30,500                FICL                 STATE STREET BANK AND TR CO


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