Holding(s) in Company

Great Portland Estates PLC
20 November 2006


Letter to: Great Portland Estates Plc

Dated: 14 November 2006


Companies Act 1985 ('The Act') - Part VI

I hereby inform you that as at 13-November-06 Barclays PLC, through the 
legal entities listed on the attached schedule, has a notifiable interest in
the capital of your Company of 4.00%

Details of this interest, together with a breakdown between registered holders
(as required by Section 202(3) of the Act), are enclosed.

The issued capital of 163,981,580 is the latest figure available to us. 


From: Geoff Smith   
      Barclays PLC





                               LEGAL ENTITY REPORT

GREAT PORTLAND EST                                              SEDOL: B01FLL1

As at 13 November 2006 Barclays PLC, through the legal entities listed below, had
a notifiable interest in 6,559,892 ORD GBP0.125 representing 4.00% of the issued
share capital of 163,981,580 units.


Legal Entity                                              Holding     Percentage
                                                                            Held

Barclays Life Assurance Co Ltd                            190,782          .1163
Barclays Global Investors Japan Ltd                        16,693          .0102
Barclays Global Investors Ltd                           1,634,509          .9968
Barclays Bank Trust Company Ltd                             4,320          .0026
Barclays Capital Inc                                      366,847          .2237 
Barclays Global Investors, N.A.                         1,082,741          .6603 
Barclays Global Investors Japan Trust & Banking           194,730          .1188
Barclays Global Investors Australia Ltd                    14,186          .0087
Barclays Global Investors Canada Ltd                       11,955          .0073 
Barclays Global Fund Advisors                           1,494,466          .9114
Gerrard Ltd                                               110,536          .0674
Barclays Capital Securities Ltd                         1,438,127          .8770

                                   Group Holding        6,559,892         4.0005





                           REGISTERED HOLDERS REPORT

GREAT PORTLAND EST                                              SEDOL: B01FLL1

As at 13 November 2006 Barclays PLC, through the registered holders listed 
below, had a notifiable interest in 6,559,892 ORD GBP0.125 representing 4.00%
of the issued share capital of 163,981,580 units.


Registered Holder                                 Account                Holding
                                                  Designation            

BANK OF IRELAND                                   429084                   4,338
BANK OF NEW YORK                                                          12,160
BARCLAYS CAPITAL NOMINEES LIMITED                                        366,847
BARCLAYS CAPITAL NOMINEES LIMITED                                      1,438,127
BOISS NOMINEES LTD                                4224361                158,218
Barclays Global Investors Canada                                          11,955
Barclays Trust Co DMC69    C 000000000000000000                            4,320
CHASE NOMINEES LTD                                16376                   82,013
CHASE NOMINEES LTD                                28270                   57,927
INVESTORS BANK AND TRUST CO.                                             982,240 
INVESTORS BANK AND TRUST CO.                                           1,494,466
JP MORGAN (BGI CUSTODY)                           16331                   41,560
JP MORGAN (BGI CUSTODY)                           16341                   91,295
JP MORGAN (BGI CUSTODY)                           16400                1,237,968
JP MORGAN (BGI CUSTODY)                           18409                  151,972
JPMORGAN CHASE BANK                                                       14,186
JPMORGAN CHASE BANK                                                        5,327
JPMorgan Chase Bank                                                      194,730  
JPMorgan Chase Bank                                                       11,341
Mellon Trust - US CUSTODIAN /                                              5,831
Mitsui Asset                                                               2,926
R C Greig Nominees Limited                                                97,660
R C Greig Nominees Limited GP1                                             1,757
R C Greig Nominees Limited SA1                                             3,120
R C Greig Nominees Limited a/c AK1                                         3,689
R C Greig Nominees Limited a/c BL1                                         3,110
R C Greig Nominees Limited a/c CM1                                         1,200
STATE STREET BOSTON                                                       77,183
Trust & Custody Service Bank                                               2,426

                                                          Total        6,559,892







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