Blocklisting Interim Review

SIG PLC
03 August 2005



                    BLOCKLISTING SIX MONTHLY REVIEW


1. NAME OF COMPANY:               SIG PLC



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


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



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



5. NUMBER OF SHARES ISSUED/ALLOTTED
   UNDER SCHEME DURING PERIOD:         NIL ORDINARY 10 SHARES



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



7. NUMBER AND CLASS OF SHARE(S)                
   (AMOUNT OF STOCK/DEBT SECURITIES)             200,366 ORDINARY 10P SHARES
   ORIGINALLY LISTED AND THE DATE OF ADMISSION:  ADMITTED 8 SEPTEMBER 2000


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 AUGUST 2005 WAS 121,776,442
CONTACT FOR QUERIES

NAME:                                 R C MONRO
TELEPHONE:                            0114 285 6355







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