Holding(s) in Company

Informa PLC
20 June 2006


                           SCHEDULE 10
 
             NOTIFICATION OF MAJOR INTERESTS IN SHARES


1)   NAME OF COMPANY

      INFORMA PLC

2)   NAME OF SHAREHOLDER HAVING A MAJOR INTEREST

      LEGAL AND GENERAL GROUP PLC AND/OR 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

      AS 2 ABOVE

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
     company should not be taken into account when
     calculating percentage)

      N/A

7)   Number of shares/amount of stock disposed

      NOT KNOWN

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

      NOT KNOWN

9)   Class of security

      ORDINARY SHARES OF 10 PENCE EACH

10)  Date of transaction

      NOT KNOWN

11)  Date company informed

     20 JUNE 2006

12)  Total holding following this notification

      33,787,746
               
13)  Total percentage holding of issued class following this notification (any 
     treasury shares held by the company should not be taken into account 
     when calculating percentage)

      7.99%

14)  Any additional information

      ISSUED SHARE CAPITAL = 422,358,517

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 ...20 JUNE 2006.........


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.

Letter to Informa Group Plc
Dated: 20 June, 2006

Disclosure of Interest in shares Under Section 198

Please find below the details of the notifiable interest of Legal & General 
Group plc and/or its subsidiaries in the relevant share capital of your company:

Material Interest

HSBC Global Custody Nominee (UK) Ltd A/C 914945       149,316
HSBC Global Custody Nominee (UK) Ltd A/C 923363       248,557
HSBC Global Custody Nominee (UK) Ltd A/c 775237       333,965
HSBC Global Custody Nominee (UK) Ltd A/c 942199     1,875,000
HSBC Global Custody Nominee (UK) Ltd A/c 942229     1,790,644
HSBC Global Custody Nominee (UK) Ltd A/c 942217     1,803,497
HSBC Global Custody Nominee (UK) Ltd A/c 942205     1,621,259
HSBC Global Custody Nominee (UK) Ltd A/c 942175     1,771,414
HSBC Global Custody Nominee (UK) Ltd A/c 942187     1,821,293
HSBC Global Custody Nominee (UK) Ltd A/c 775245     1,217,181
HSBC Global Custody Nominee (UK) Ltd A/c 770286       640,000
HSBC Global Custody Nominee (UK) Ltd A/c 357206    10,430,875
HSBC Global Custody Nominee (UK) Ltd A/c 866203       839,322                    
HSBC Global Custody Nominee (UK) Ltd A/c 916681        21,700
HSBC Global Custody Nominee (UK) Ltd A/c 969995       985,849
HSBC Global Custody Nominee (UK) Ltd A/c 754612     1,253,464
HSBC Global Custody Nominee (UK) ltd A/c 361602        96,760
HSBC Global Custody Nominee (UK) Ltd A/c 282605     4,611,011
HSBC Global Custody Nominee (UK) Ltd A/c 360509       653,069
HSBC Global Custody Nominee (UK) Ltd A/c 766793       741,031
HSBC Global Custody Nominee (UK) Ltd A/c 824434        64,755
HSBC Global Custody Nominee (UK) Ltd A/c 924422       817,784

                                                   33,787,746    7.99%


We currently have a notifiable interest in 33,787,746 Ordinary 10p shares which
we understand represents 7.99% of that class of your share capital calculated 
on an issued share capital of 422,356,517 Ordinary 10p shares.


Letter from Legal & General Investment Management







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