Managing director Kate Meehan said the figures were promising for both the venue and the London conference and meetings market.
"The last few years have been very tough on the meeting and events industry. The prolonged economic downturn and falling demands for corporate hospitality has made it financially tight for many venues in central London, but the green shoots of growth are slowly starting to appear," she said.
Repeat business is running at an average of 75 per cent for the venue, she said, with a steady stream of new enquiries.
"We are delighted with these figures as they reflect the hard work we put into each and every event from the original enquiry to the final glass of wine at the closing reception."
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