Blocklisting Interim Review

SIG PLC
03 August 2005



                             SCHEDULE 5

                    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
   AT END OF THE LAST PERIOD:

521,948 Ordinary 10p Shares

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

123,100 Ordinary 10p Shares

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

398,848 Ordinary 10p Shares

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

564,500 Ordinary 10p Shares
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 August 2005 was 121,776,442


CONTACT FOR QUERIES

NAME:      R C Monro

TELEPHONE: [phone]



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