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

1981 Saving Related Share Option Scheme                                        

3. Period of return:

From    01.01.06                        To    30.06.06                         

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

277,668 ordinary shares of 25p                                                 

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

504,104 ordinary shares of 25p                                                 

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

373,564 ordinary shares of 25p                                                 

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

1,000,000 ordinary shares of 25p A/3886/1997                                   
                                                                               
1,000,000 ordinary shares of 25p RA/Slough Estates plc/0008-001                
                                                                               
2,000,000 ordinary shares of 25p                                               
                                                                               
500,000 ordinary shares of 25p RA/Slough Estates plc/00020                     
                                                                               
300,000 ordinary shares of 25p                                                 

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

471,046,338 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                                                                      

The FSA does not give any express or implied warranty as to the accuracy of
this document or material and does not accept any liability for error or
omission. The FSA is not liable for any damages (including, without limitation,
damages for loss of business or loss of profits) arising in contract, tort or
otherwise from the use of or inability to use this document, or any material
contained in it, or from any action or decision taken as a result of using this
document or any such material.