Holding(s) in Company

Great Portland Estates PLC
23 October 2006



Letter to: Great Portland Estates Plc

Dated: 18 October 2006


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

I hereby inform you that as at 17-October-2006 Barclays PLC, through the 
legal entities listed on the attached schedule, has a notifiable interest in
the capital of your Company of 4.2%

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 163,578,033 is the latest figure available to us. If this
is incorrect please let me know.


From: Geoff Smith   
      Barclays PLC





                               LEGAL ENTITY REPORT

GREAT PORTLAND EST                                              SEDOL: B01FLL1

As at 17 October 2006 Barclays PLC, through the legal entities listed below, had
a notifiable interest in 6,863,075 ORD GBP0.125 representing 4.20% of the issued
share capital of 163,578,033 units.


Legal Entity                                              Holding     Percentage
                                                                            Held

Barclays Global Investors Japan Ltd                        16,145          .0099
Barclays Life Assurance Co Ltd                            190,782          .1166
Barclays Global Investors Ltd                           1,651,435         1.0096
Barclays Bank Trust Company Ltd                             4,320          .0026
Barclays Capital Securities Ltd                         1,533,811          .9377 
Barclays Global Fund Advisors                           1,481,467          .9057 
Barclays Global Investors Australia Ltd                    14,186          .0087
Barclays Global Investors Canada Ltd                       11,955          .0073
Gerrard Ltd                                               111,576          .0682
Barclays Global Investors, N.A.                         1,086,743          .6644
Barclays Global Investors Japan Trust & Banking           193,808          .1185
Barclays Capital Inc                                      566,847          .3465


                                   Group Holding        6,863,075         4.1957





                           REGISTERED HOLDERS REPORT

GREAT PORTLAND EST                                              SEDOL: B01FLL1

As at 17 October 2006 Barclays PLC, through the registered holders listed 
below, had a notifiable interest in 6,863,075 ORD GBP0.125 representing 4.20%
of the issued share capital of 163,578,033 units.


Registered Holder                                 Account                Holding
                                                  Designation            

BANK OF NEW YORK                                                          12,160
BARCLAYS CAPITAL NOMINEES LIMITED                                      1,533,811
BARCLAYS CAPITAL NOMINEES LIMITED                                        566,847
BOISS NOMINEES LTD                                4224361                153,424
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
Greig Middleton Nominees Limited (GMI)                                     3,000
INVESTORS BANK AND TRUST CO.                                           1,481,467
INVESTORS BANK AND TRUST CO.                                             984,894
JP MORGAN (BGI CUSTODY)                           16331                   41,560
JP MORGAN (BGI CUSTODY)                           16341                   91,295
JP MORGAN (BGI CUSTODY)                           16400                1,264,026
JP MORGAN (BGI CUSTODY)                           18409                  151,972
JPMORGAN CHASE BANK                                                       14,186
JPMORGAN CHASE BANK                                                        5,327
JPMorgan Chase Bank                                                      193,808  
JPMorgan Chase Bank                                                       11,341 
Mellon Trust - US CUSTODIAN/                                               7,179
Mitsui Asset                                                               2,926
R C Greig Nominees Limited                                                94,260
R C Greig Nominees Limited GP1                                             1,757
R C Greig Nominees Limited SA1                                             3,120
R C Greig Nominees Limited a/c AK1                                         5,129
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                                               1,878

                                                          Total        6,863,075





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