Holding(s) in Company

Informa PLC
17 October 2005

                           SCHEDULE 10
 
             NOTIFICATION OF MAJOR INTERESTS IN SHARES


1)   NAME OF COMPANY

INFORMA PLC

2)   NAME OF SHAREHOLDER HAVING A MAJOR INTEREST

AVIVA PLC AND ITS SUBSIDIARIES

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

IN RESPECT OF 2 ABOVE

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

MORLEY FUND MANAGEMENT LIMITED:
BNY NORWICH UNION NOMINEES LIMITED          4,097,256*
CHASE GA GROUP NOMINEES LIMITED             3,471,074*
CHASE NOMINEES LIMITED                        392,948*
CUIM NOMINEE LIMITED                        4,655,748*

* DENOTES BENEFICIAL INTEREST

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

33,600

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

0.008%

9)   Class of security

ORDINARY SHARES OF 10 PENCE EACH

10)  Date of transaction

13 OCTOBER 2005

11)  Date company informed

17 OCTOBER 2005

12)  Total holding following this notification

12,617,026
               
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)

2.99%

14)  Any additional information

ISSUED SHARE CAPITAL - 421,236,121

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    ANDREA CALLABY, DEPUTY COMPANY SECRETARY

     Date of Notification ....17 OCTOBER 2005....................






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