The short answer: for a London wedding or celebration of 300+ guests, look to grand banqueting halls, large hotel ballrooms, livery halls and marquee-ready country estates within reach of the city — and always confirm capacity for your specific layout, catering access and whether multiple functions can be hosted on site.
Large guest lists need venues built for scale. Beyond raw capacity, the practical details — kitchen access, parking, licensing and flow between spaces — make or break a big celebration.
Venue types that work at scale
Grand banqueting halls and hotel ballrooms handle 300+ comfortably with in-house infrastructure. Livery halls offer character for formal occasions, and country estates give you space and exclusivity for multi-day events.
What to check before booking
Confirm the seated-dinner capacity for your layout (not just the standing figure), kitchen and catering access for your chosen caterer, décor and lighting rig allowances, and whether the venue can host more than one function.
Cultural considerations
For South Asian weddings, check the venue allows your caterer, open flame for ceremonies where needed, and the décor scale a mandap requires.
We source and secure venues as part of planning — tell us your guest count and we'll shortlist the right spaces.