Blocklisting Interim Review

SIG PLC
06 August 2007


                                      SCHEDULE 5

                            BLOCKLISTING SIX MONTHLY RETURN



1. Name of company

SIG plc

2. Name of scheme

SIG plc - The Sheffield Insulation Group plc - 1989 Share Option Scheme

3. Period of return: From                To
                     4 February 2007     3 August 2007

4. Number and class of share(s) (amount of stock / debt security) not issued
under scheme

139,407 Ordinary 10p Shares

5. Number of shares issued / allotted under scheme during period:

Nil

6. Balance under scheme not yet issued / allotted at end of period

139,407 Ordinary 10p Shares

7. Number and class of share(s) (amount of stock / debt securities) originally
listed and the date of admission;

1,176,188 Ordinary 10p Shares

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 4 August 2007 was 134,966,370

Contact for queries

Richard Monro

Hillsborough Works, Langsett Road, Sheffield S6 2LW

Telephone    [phone]

Person making the return

Richard Monro
Company Secretary




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