Blocklisting Interim Review

Informa PLC
10 January 2006

                    BLOCKLISTING SIX MONTHLY REVIEW


1. NAME OF COMPANY:

   INFORMA PLC


2. NAME OF SCHEME:

   IBC GROUP PLC 1995 EXECUTIVE SHARE OPTION SCHEME
  

3. PERIOD OF RETURN:     FROM:            TO:

                         04/06/2005       04/12/2005


4. NUMBER AND CLASS OF SHARE(S)
   (AMOUNT OF STOCK/DEBT SECURITY)
   NOT ISSUED UNDER SCHEME
   AT END OF THE LAST PERIOD:

   173,050 ORDINARY SHARES OF 10 PENCE EACH



5. NUMBER OF SHARES ISSUED/ALLOTTED
   UNDER SCHEME DURING PERIOD:

   18,602


6. BALANCE UNDER SCHEME NOT YET ISSUED/ALLOTTED 
   AT END OF PERIOD:

   154,448


7. NUMBER AND CLASS OF SHARE(S) 
   (AMOUNT OF STOCK/DEBT SECURITIES) 
   ORIGINALLY LISTED AND THE DATE OF ADMISSION:

   450,000 ON 07/02/00 AND 200,000 ON 05/04/01.  ALL ORDINARY SHARES OF 10 PENCE
   EACH

PLEASE CONFIRM TOTAL NUMBER OF SHARES IN ISSUE AT THE END OF THE PERIOD
IN ORDER FOR US TO UPDATE OUR RECORDS.

   421,345,692 AS AT 4 DECEMBER 2005

CONTACT FOR QUERIES

NAME:                         ANDREA CALLABY

TELEPHONE:                    020 7017 4311



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