Director Declaration

20 May 2025

Great Portland Estates plc

Director Declaration

In accordance with Listing Rule 6.4.9R, Great Portland Estates plc (the "Company") announces that, with effect from 15 May 2025, Karen Green, a Non-Executive Director of the Company, has been appointed as an Independent Non-Executive Director of Hamilton Insurance Group Ltd., whose shares are listed on the New York Stock Exchange.

Darren Lennark

General Counsel & Company Secretary

020 7647 3000

LEI Number:  213800JMEDD2Q4N1MC42