Blocklisting Interim Review

SIG PLC
06 February 2006

                    BLOCKLISTING SIX MONTHLY REVIEW


1. NAME OF COMPANY:                SIG PLC



2. NAME OF SCHEME:                 SIG PLC - 1997 SAVINGS-RELATED SHARE
                                   OPTION SCHEME



3. PERIOD OF RETURN:     FROM:     4 AUGUST 2005    TO:  3 FEBRUARY 2006



4. NUMBER AND CLASS OF SHARE(S)
   (AMOUNT OF STOCK/DEBT SECURITY)
   NOT ISSUED UNDER SCHEME
   AT END OF THE LAST PERIOD:           477,865 ORDINARY 10P SHARES



5. NUMBER OF SHARES ISSUED/ALLOTTED
   UNDER SCHEME DURING PERIOD:         40,579 ORDINARY 10P SHARES



6. BALANCE UNDER SCHEME NOT YET ISSUED/ALLOTTED 
   AT END OF PERIOD:                   437,286 ORDINARY 10P SHARES



7. NUMBER AND CLASS OF SHARE(S) 
   (AMOUNT OF STOCK/DEBT SECURITIES)              2,306,417 ORDINARY 10P SHARES
   ORIGINALLY LISTED AND THE DATE OF ADMISSION:   ADMITTED 28 MARCH 2002


PLEASE CONFIRM TOTAL NUMBER OF SHARES IN ISSUE AT THE END OF THE PERIOD
IN ORDER FOR US TO UPDATE OUR RECORDS.        TOTAL NUMBER OF SHARES IN ISSUE
                                              AT 3 FEBRUARY 2006 WAS 121,897,147


CONTACT FOR QUERIES                R C MONRO

NAME:                              RICHARD MONRO     
TELEPHONE:                         0114 285 6355







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