Blocklisting Interim Review

Informa PLC
10 January 2006

                    BLOCKLISTING SIX MONTHLY REVIEW


1. NAME OF COMPANY:        INFORMA PLC


2. NAME OF SCHEME:         INFORMA GROUP PLC SAVINGS RELATED SHARE OPTION SCHEME


3. PERIOD OF RETURN:       FROM: 04/06/2005     TO:  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:          280,000 ORDINARY SHARES OF 10 PENCE EACH


5. NUMBER OF SHARES ISSUED/ALLOTTED
   UNDER SCHEME DURING PERIOD:         156,100



6. BALANCE UNDER SCHEME NOT YET ISSUED/ALLOTTED 
   AT END OF PERIOD:                   123,900



7. NUMBER AND CLASS OF SHARE(S)                  100,000 ON 15/07/98, 
   (AMOUNT OF STOCK/DEBT SECURITIES)              66,000 ON 05/04/01, 
   ORIGINALLY LISTED AND THE DATE OF ADMISSION:    6,146 ON 20/05/05, AND
                                                 280,000 ON 24/05/05, -
                                                 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:          [phone]


END






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