So far the show has secured exhibitors including Awesome Events, Bateaux London and Royal College of Physicians.
Story has also partnered with marquee specialists Mar-Key, who will cover the venue’s courtyard with a conservatory-style structure, which will house the visitors' lounge and main bar area.
Dominique Gill, director of London Summer Event Show, said: "We are delighted to have secured this gem of a venue in the heart of the city. We are committed to moving the venue of our shows to introduce both agency and corporate buyers to new event spaces."
Simon Fooks, managing director of Merchant Taylors’ Catering, added: "The opportunity to welcome more than 700 show visitors to our hall over the two days of the event will allow us to showcase the venue for both summer and year-round events."
The inaugural London Summer Event Show was held at One Marylebone on 27-28 January 2015.
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