Rule 2.10 Announcement

Great Portland Estates PLC
03 November 2006


Great Portland Estates plc ('GPE') Rule 2.10 announcement

For the purposes of Rule 2.10 of the City Code on Takeovers and Mergers and
following the conversion of £750,000 5.25% convertible bonds 2008, GPE's current
issued share capital consists of 163,981,580 ordinary shares of 12.5p each and 
£52,829,000 outstanding of 5.25% convertible bonds 2008.

The International Securities Identification Number for GPE ordinary shares is
GB00B01FLL16 and for GPE 5.25% convertible bonds 2008 is GB0002479938 (for
registered bonds) and XS0084560209 (for bearer bonds).

Contacts:

Great Portland Estates plc
Desna Martin                    Company Secretary     020 7647 3093

Finsbury
Gordon Simpson                                        020 7251 3801


                      This information is provided by RNS
            The company news service from the London Stock Exchange