Blocklisting Interim Review

SIG PLC
06 February 2007


                                     SCHEDULE 5

                           BLOCKLISTING SIX MONTHLY RETURN

1. Name of company

SIG plc

2. Name of scheme

SIG plc - The Sheffield Insulation Group plc - Savings Related Share Option
Scheme

3. Period of return:    From  4 August 2006   To   3 February 2007
                            

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

449,570 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

449,570 Ordinary 10p Shares

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

949,752 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 3 February 2007 was 123,107,361

Contact for queries

Name

Richard Monro

Address

Hillsborough Works, Langsett Road, Sheffield S6 2LW

Telephone

0114 2856355

Person making the return

Name

Richard Monro

Position

Company Secretary

Signature

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