Rule 2.10 Announcement

Great Portland Estates PLC
16 October 2006


16 October 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 £450,000 5.25% convertible bonds 2008, GPE's current 
issued share capital consists of 163,578,033 ordinary shares of 12.5p each and 
£54,080,000 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



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