Save Portman Square London Steeped in history, Portman Square makes for the perfect backdrop for your wedding or event. HomeEvent DesignVenuesPortman Square Share this Portman Square is not available to hire itself however its partners; The Churchill Hyatt Regency, The Portman Radisson Blue Hotel and Home House are all located on the square and have garden locations available to hire. The maximum size of the marquee is to be no larger than a standard tennis court. Contact Details Add to ShortList My ShortList Address Marylebone London W1H 6LH UK Phone +44 20 7563 1400 Other venues located in London The Hurlingham Club Loft Studios Kingston Grammar – Dittons Field Harrow School Back to see the venues map