Home of the Royal College of General Practitioners, this Grade II*-listed Greek Revival building features a formidable portfolio of spaces to hold weddings, alongside luxury bedrooms for guests. Licensed for both civil ceremonies and weddings, the Victorian venue can also host wedding breakfasts – with Searcys in charge of catering, the food and service are guaranteed to be good. Of the spaces, our pick would be the penthouse State Room, which comes with the run of the rooftop terrace. More traditional functions can take place in the stately Heritage Rooms. Couples hosting their big day at 30 Euston Square will get their own wedding planner from the venue to help bring all the details together.