Conference Facilities in Central London - The Mary Sumner Room The Mary Sumner Room, with its distinctive stained glass windows and calm atmosphere, can accommodate 25 people boardroom style, 40 people theatre style, or 20 people cabaret style. | Session Rate
(9.00am - 1.00pm or 1.30pm to 5.30pm) | Full Day Rate | | £ 240.00 | £ 375.00 | | Registered Charity | £ 175.00 | £ 285.00 | Mary Sumner Room Dimensions 
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