If you’re looking for an upscale address for your event, then this space on Curzon Street will tick all the boxes. The most expensive square on the Monopoly board, Mayfair is one of London’s most upmarket areas, home to the city’s highest concentration of luxury hotels, exclusive clubs and Michelin-starred eateries. With a ground floor bar and seating area, basement dining room and wine cellar, and a first floor, there’s space for 50 people seated and 100 standing.