2 February 2026

Great Portland Estates plc (the "Company" or "GPE")

GPE appoints Non-Executive Director

The Company announces that Peter Duffy will join the Board as a Non-Executive Director with effect from 2 March 2026 and will become a member of the Audit, Remuneration and Nomination Committees from that date.

Peter has been the Chief Executive Officer of Mony Group plc since September 2020.  His previous executive roles have included Chief Executive Officer at Just Eat, Chief Commercial Officer at easyJet and Head of Marketing at Audi UK, as well as a number of senior commercial roles at Barclays.

Peter was a Non-Executive Director of Close Brothers Group plc from January 2019 to February 2024, serving also on its Nomination, Remuneration and Risk Committees.  He was also previously President of the Incorporated Society of British Advertisers, the UK trade body for leading British advertisers.

Commenting on the appointment, GPE Chair William Eccleshare said:

"I am delighted that Peter will be joining the GPE Board, bringing his considerable commercial, operational and recent non-executive experience. The Board and I very much look forward to working with him."

There are no additional matters that would require disclosure under UK LR 6.4.8R in respect of Peter Duffy.

LEI Number:  213800JMEDD2Q4N1MC42