Holding(s) in Company

Great Portland Estates PLC
09 October 2006



Letter to Great Portland Estates Plc

Dated 05 October 2006


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

I hereby inform you that as at 04-October-2006 Barclays PLC, through the 
legal entities listed on the attached schedule, has a notifiable interest in
the capital of your Company of 5.22%

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 163,432,872 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 04 October 2006 Barclays PLC, through the legal entities listed below, had
a notifiable interest in 8,531,431 ORD GBP0.125 representing 5.22% of the issued
share capital of 166,432,872 units.


Legal Entity                                              Holding     Percentage
                                                                            Held

Gerrard Ltd                                               111,576          .0683
Barclays Global Investors Australia Ltd                    14,186          .0087
Barclays Global Investors Japan Trust & Banking           193,808          .1186
Barclays Capital Securities Ltd                         2,567,103         1.5707
Barclays Life Assurance Co Ltd                            190,782          .1167
Barclays Global Investors Canada Ltd                       11,955          .0073
Barclays Bank Trust Company Ltd                             4,320          .0026
Barclays Global Investors, N.A.                         1,087,475          .6654
Barclays Global Investors Ltd                           1,691,338         1.0349
Barclays Global Investors Japan Ltd                        16,145          .0099
Barclays Capital Inc                                    1,166,847          .7140
Barclays Global Fund Advisors                           1,475,896          .9031

                                    Group Holding       8,531,431         5.2202






                           REGISTERED HOLDERS REPORT

GREAT PORTLAND EST                                              SEDOL: B01FLL1

As at 04 October 2006 Barclays PLC, through the registered holders listed 
below, had a notifiable interest in 8,531,431 ORD GBP0.125 representing 5.22%
of the issued share capital of 163,432,872 units.


Registered Holder                                 Account           
                                                  Designation            Holding

BANK OF NEW YORK                                                          12,160
BARCLAYS CAPITAL NOMINEES LIMITED                                      2,567,103
BARCLAYS CAPITAL NOMINEES LIMITED                                      1,166,847
BOISS NOMINEES LTD                                4224361                154,237
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.                                             982,338
INVESTORS BANK AND TRUST CO.                                           1,475,896
JP MORGAN (BGI CUSTODY)                           16331                   41,560
JP MORGAN (BGI CUSTODY)                           16341                   91,295
JP MORGAN (BGI CUSTODY)                           16400                1,304,743
JP MORGAN (BGI CUSTODY)                           18409                  150,345
JPMORGAN CHASE BANK                                                        5,327
JPMORGAN CHASE BANK                                                       14,186
JPMorgan Chase Bank                                                       11,341  
JPMorgan Chase Bank                                                      193,808
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                                                       80,471
Trust & Custody Service Bank                                               1,878

                                                  Total                8,531,431




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