Holding(s) in Company

Informa PLC
17 October 2005


             NOTIFICATION OF MAJOR INTERESTS IN SHARES


1)   NAME OF LISTED COMPANY

     INFORMA PLC

2)   NAME OF SHAREHOLDER HAVING A MAJOR INTEREST

     THE AEGON UK PLC GROUP OF COMPANIES

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

     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.

     CHASE NOMINEES LIMITED

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

     6,873,103

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

     1.63%

9)   Class of security

     ORDINARY SHARES OF 10 PENCE EACH

10)  Date of transaction

     14 OCTOBER 2005

11)  Date listed company informed

     17 OCTOBER 2005

12)  Total holding following this notification

     9,422,939
               
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)

     2.23%

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 duly authorised officer of the listed company
     responsible for making this notification

     ANDREA CALLABY, DEPUTY COMPANY SECRETARY

     Date of Notification

     17 OCTOBER 2005


The FSA does not give any express or implied warranty as to the accuracy of this
document or material and does not accept any liability for error or omission.
The FSA is not liable for any damages (including, without limitation, damages
for loss of business or loss of profits) arising in contract, tort or otherwise
from the use of or inability to use this document, or any material contained in
it, or from any action or decision taken as a result of using this document or
any such material.



                      This information is provided by RNS
            The company news service from the London Stock Exchange