Blocklisting - Interim Review

SCHEDULE 5                                   
                                                                               
                        BLOCKLISTING SIX MONTHLY RETURN                        

To: Listing Applications

UK Listing Authority

Financial Services Authority

25, The North Colonnade

Canary Wharf

London, E14 5HS

              Please ensure the entries on this return are typed               

1. Name of company

Slough Estates plc                                                             

2. Name of scheme

1994 Approved Executive Share Option Scheme (No 1)                             

3. Period of return:

From    01.07.06                        To    31.12.06                         

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

389,268 ordinary shares of 25p                                                 

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

33,534                                                                         

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

355,734 ordinary shares of 25p                                                 

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

500,000 ordinary shares of 25p A/3602/1997                                     
                                                                               
500,000 ordinary shares of 25p RA/Slough Estates plc/00016                     

Please confirm total number of shares in issue at the end of the period in
order for us to update our records

471,950,073 ordinary shares of 25p                                             

Contact for queries

Name          Anne-Marie Norman                                                

Address       Slough Estates plc, 234 Bath Road, Slough, SL1 4EE               

Telephone     [phone]                                                     

Person making the return

Name          Anne-Marie Norman                                                

Position      Company Secretarial Assistant                                    

Signature                                                                      

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