One Marylebone stands proudly on its own ‘island’ in the heart of London. Built in 1826 and designed by the acclaimed Sir John Soane, this former Holy Trinity Church has been reimagined as one of the city’s most iconic and versatile event spaces since 2008. Whether hosting an elegant garden reception for 250 guests or a full-scale indoor celebration that never loses its atmosphere or impact, One Marylebone effortlessly adapts to every occasion. It remains one of the few London venues capable of accommodating a seated dinner for up to 320 guests or a standing reception for 500 – with the unique option to continue the night in a private club-style after-party, all under one roof. From high-profile brands to corporate gatherings and private celebrations, One Marylebone offers a collection of flexible spaces ideal for awards ceremonies, conferences, gala dinners, exhibitions, film premieres, fashion shows, weddings, and more. More than just a venue, One Marylebone is a place where imagination truly comes to life.