Holding(s) in Company

Informa PLC
30 September 2005

                           SCHEDULE 10
 
             NOTIFICATION OF MAJOR INTERESTS IN SHARES


1)   NAME OF 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 in respect of 
     holding of the Shareholder named in 2 above or 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

     N/A

7)   Number of shares/amount of stock disposed

     1,031,000

8)   Percentage of issued Class

     0.24%

9)   Class of security

     ORDINARY SHARES OF 10 PENCE EACH

10)  Date of transaction

     NOT KNOWN

11)  Date company informed

     27 SEPTEMBER 2005

12)  Total holding following this notification

      24,254,823
               
13)  Total percentage holding of issued class following this notification

      5.76%

14)  Any additional information

      ISSUED SHARE CAPITAL - 421,220,580

15)  Name of contact and telephone number for queries

     ANDREA CALLABY - 020 7017 4311

16)  Name and signature of authorised company official responsible for 
     making this notification


     Date of Notification ....30 SEPTEMBER 2005......


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SCHEDULE A                                                       AMENDMENT 10

SECURITY:  INFORMA PLC

Current ownership percentage:                    5.76%

Total Shares Held                                24,254,823

Shares in issue:                                 421,220,580

Change in holdings since last filing:           1,031,000) ordinary shares

                     SHARES HELD      MANAGEMENT       NOMINEE/REGISTERED
                                        COMPANY        NAME

                 2,573,037                FPM    NORTHERN TRUST LONDON

                 1,862,462                FPM    BANK OF NEW YORK BRUSSELS  

                 1,823,202                FPM    JP MORGAN BOURNEMOUTH

                   806,224                FPM    MELLON BANK

                   494,970                FPM    STATE STR BK AND TR CO LNDN (S

                   126,004                FPM    CLYDESDALE BANK PLC

                 7,356,000              FMRCO    JP MORGAN CHASE BANK 

                 1,128,700              FMRCO    STATE STREET BANK AND TR CO

                    12,200              FMRCO    NORTHERN TRUST CO 

                     9,900              FMRCO    BROWN BROTHERS HARRIMAN AND CO

                 4,817,709               FISL    JP MORGAN BOURNEMOUTH

                   437,763                FIL    BROWN BROS HARRIMN LTD LUX

                   414,150                FIL    JP MORGAN BOURNEMOUTH

                   362,082                FIL    BANK OF NEW YORK BRUSSELS

                    75,740                FIL    STATE STR BK AND TR CO LNDN (S

                 1,954,680                FIL    BANK OF NEW YORK EUROPE LDN





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