Planning a conference for hundreds or even thousands? London’s best large venues combine serious capacity with slick production, standout catering and superb transport links, so your delegates get the five-star treatment from arrival to applause. From purpose-built hubs and iconic arenas to historic halls with cinematic flair, here are our top picks to make your next conference unmissable — and if you need a steer, our venue experts are on hand to help.
1. ODEON LUXE Leicester Square
ODEON LUXE Leicester Square
For keynote impact in the heart of the West End, ODEON LUXE Leicester Square delivers. The iconic main theatre seats 794 with a built-in stage, Dolby cinema tech and plush recliners, ideal for AGMs, launches and headline sessions.
Host slick breakouts in five adjacent Studio Screens, then move delegates to a daylit lobby overlooking the square for networking. With a bar, award-winning catering and Leicester Square Tube moments away, logistics are effortless.
Location: Leicester Square
Capacity: 794 Theatre
2. The Inner Temple
The Inner Temple
Blending Georgian grandeur with modern kit, The Inner Temple makes a brilliant central base for conferences. The fully accessible Lecture Theatre seats 120 and comes with built-in AV, in-house production and private registration, so your plenary runs like clockwork, with content streamed across adjacent breakouts.
Eight versatile rooms support workshops and sponsor hubs, while the award-winning three-acre garden sets the scene for fresh-air networking, and you're moments from Temple and Blackfriars.
Location: Temple
Capacity: 120 Theatre
3. Vue West End - Leicester Square
Vue West End - Leicester Square
Make your conference cinematic at Vue West End, right on Leicester Square. With nine screens (79–270 seats) and a full-venue capacity of 1,383, you can stage a headline plenary with multiple breakouts, powered by state-of-the-art projection, pinpoint sound and tiered seating for flawless sightlines and comfort.
Welcome guests with canapés and drinks in the exclusive bar, then keep them fuelled with catering options. Moments from Leicester Square Tube, this West End spot makes slick production and easy logistics a given for AGMs, launches and large-scale conferences.
Location: West End
Capacity: 270 Theatre
4. Tottenham Hotspur Stadium
Tottenham Hotspur Stadium
For a blockbuster conference, Tottenham Hotspur Stadium brings stadium-scale polish. East Quarter Level Three seats up to 850 theatre or welcomes 1,000 for exhibitions, with natural light, state-of-the-art AV and digital signage to keep content slick and on-brand.
Pair with East Quarter Level Two for 30+ stands and pitch-facing loges for breakouts, then toast the day in a private bar. Expect in-house catering, VIP spaces, full accessibility and sustainability creds, plus swift links via White Hart Lane.
Location: Tottenham
Capacity: 850 Theatre
5. OVO Arena Wembley
OVO Arena Wembley
Go big without the headache at OVO arena Wembley. This Grade II listed icon pairs arena-scale impact with swift links via Wembley Park. Uninterrupted floor space and in-house draping switch the bowl from full auditorium to an intimate short hall, with theatre seating up to 3,000 and space for staging and exhibitions.
Breakouts are sorted: Heroes Lounge and Coors Lounge host workshops or press, with bars and easy catering. With a seasoned events team and ample back-of-house space, it's a heavyweight choice for keynotes and conferences needing scale and flexibility.
Location: Wembley Stadium
Capacity: 3000 Theatre
6. University of London Venues
University of London Venues
For a conference with gravitas and glide, University of london venues sets the scene in historic Senate House. Run your plenary in Beveridge Hall, an Art Deco showpiece with excellent acoustics, built‑in screen, recording, roving mics and adjustable lighting, while the elegant Crush Hall delivers instant wow for registration, sponsor showcases and networking.
Add breakouts in Chancellor’s Hall and the hybrid‑ready Woburn Suite, then keep energy high with sustainable catering by Gather & Gather. Five minutes from Russell Square, it keeps everything easy and central.
Location: Bloomsbury
Capacity: 375 Theatre
7. Convene 133 Houndsditch
Convene 133 Houndsditch
Convene 133 Houndsditch delivers a purpose-built home for high-impact conferences. Spanning 49,000 sq ft, it offers a grand hall for up to 700 theatre alongside seven sizeable breakout rooms and a total of 14 flexible spaces, so your agenda flows. Internal balconies flood areas with daylight, while the gallery’s linear colour‑changing lights and curated local art create standout branding moments and networking backdrops — all in a polished, central City setting.
Location: Unknown
Capacity: 700 Theatre
8. Arundel House
Arundel House
For a polished, central conference base, Arundel House pairs historic gravitas with modern production. The light-filled Lee Kuan Yew Room hosts up to 160 theatre, with hybrid tech, on-site AV engineers and superb sightlines framed by Thames views of the Houses of Parliament and the London Eye.
Use the Trafalgar and Council Rooms for seamless breakouts, keep catering in-house, and step straight from Temple station to registration. With accessibility and daylight throughout, it’s a refined setting for plenaries, seminars and press moments.
Location: Central London
Capacity: 160 Theatre
9. Prince Philip House
Prince Philip House
Grade I listed elegance meets contemporary polish at Prince Philip House, a standout central base for large conferences. Overlooking The Mall and St James’s Park and a short stroll from Trafalgar Square, it sets a prestigious tone with effortless links via Piccadilly Circus and Charing Cross.
The Al Qasimi & ERA Foundation suite provides a bright, flexible plenary with an accessible stage, HD projection and onsite tech support, while adjacent rooms host slick breakouts and catering. Expect daylight, smooth logistics and service that keeps your programme on point.
Location: Westminster
Capacity: 170 Theatre
10. 10 Union St.
10 Union St.
A short stroll from London Bridge, 10 Union St. brings purpose-built polish to large conferences. Run your plenary in the light-drenched Main Hall (up to 300 theatre) with high ceilings, skylights and Shard views, then welcome delegates via the striking glass atrium.
With 13 flexible rooms for breakouts and sponsor showcases, state-of-the-art AV, sustainable touches and smooth in-house catering, your programme flows from keynote to networking. Superb transport links keep logistics easy for teams and speakers alike.
Location: London Bridge
Capacity: 300 Theatre
From cinematic showstoppers and stadium‑scale stages to historic halls and purpose‑built hubs, London’s large conference venues marry serious capacity with slick production, standout catering and excellent transport links. Ready to find the perfect match for your brief? Enquire on any listing above or get in touch with our venue experts for tailored recommendations and swift site visits.