London Conference Venues for 500-1000 delegates

Hosting a conference for 500-1000 attendees in London requires careful planning to ensure a successful and impactful event. You need venues which have ample space for large gatherings, with configurations that can accommodate various event formats, from keynote presentations to breakout sessions.  Logistical considerations such as accessibility, accommodation, and catering  also play a pivotal role.

Here are 15 conference venues in London with capacities between 500 and 1000 delegates:

Shoreditch Town Hall:

Once one of London’s grandest civic buildings, Shoreditch Town Hall is a stunning Grade II listed venue situated in the heart of one of the city’s most dynamic areas. Now serving as a flagship arts, community, and live events space, the Town Hall offers 8 striking and distinctive rooms ideal for all types of events. From the Victorian elegance of the Assembly Hall to the intimate, untouched charm of the basement spaces known as The Ditch, Shoreditch Town Hall has a perfect setting to suit your needs. Capacity of the Assembly Hall using the main space and the balcony is 770 theatre style.

Olympia Conference Centre:

Opening in early 2026, with a capacity of 850, the new Olympia Conference Centre is designed to be fully adaptable to any event format. With a range of room sizes and flexible layout options, the centre offers endless creative possibilities, complemented by world-class evening entertainment, dining options, and hotels onsite. Suitable for events from theatre-style conferences to awards ceremonies, product launches, and AGMs.

The Olympia Conference Centre will feature its own dedicated entrance and exit on Hammersmith Road, while seamlessly connecting to Olympia’s four renowned exhibition spaces – Olympia Grand, Olympia National, and Olympia West – providing unmatched versatility.

Freemason’s Hall:

Located in the buzzing heart of London’s West End, Freemasons’ Hall is a distinguished venue for those looking to host an event in the capital. With a capacity accommodating everything from intimate gatherings to grand events of up to 1,300 guests, this historic building provides a unique and elegant setting for any occasion. Whether you’re organising a wedding, corporate function, or special celebration, its timeless charm and sophisticated atmosphere are sure to captivate your guests. Surrounded by stunning scenery and offering versatile event spaces, Freemasons’ Hall is the perfect choice for any event.

Alexandra Palace:

Known for its beautiful views over North London, it offers both indoor and outdoor spaces with a capacity range of 1000 to 10,250 guests, making it versatile for various event sizes and types​.

Barbican Centre:

A cultural hub in the heart of London, the Barbican Hall can accommodate between 500 and 1943 people, making it suitable for large conferences and events with significant technical resources available​.

ExCeL London:

Located in East London, ExCeL is a renowned venue for corporate events, capable of hosting up to 5,000 attendees in various configurations, with spaces like the Platinum Suite fitting within the 500-1000 range​.

QEII Centre:

Situated in Westminster, it’s one of London’s largest dedicated conference centres, offering various spaces that can accommodate from a few hundred up to several thousand attendees​. 

The Brewery:

A historic venue in the heart of the City, offering a mix of rooms that can accommodate large conferences, with spaces like the Porter Tun having a capacity of up to 1,000 people​.

Tobacco Dock:

A Grade I listed building that combines historic charm with modern facilities, capable of hosting between 500 and 1000 guests, ideal for conferences and large corporate events​.

De Vere Grand Connaught Rooms:

Located in the West End, this Grade II-listed venue offers a capacity range up to 1500, with configurations suitable for mid-sized conferences within the 500-1000 range​.

Roundhouse:

Known for its iconic architecture and legacy in Camden, the Roundhouse Main Space can host between 700 and 2500 attendees, perfect for impactful conferences and events​.

Natural History Museum:

One of London’s most iconic venues, it offers a variety of spaces, including options that can accommodate between 500 and 1200 guests, making it suitable for large conferences and formal events​.

8 Northumberland Avenue:

A prestigious venue near Trafalgar Square, offering capacities up to 1000 in its main ballroom, suitable for both conferences and corporate events​. 

The Ballroom South Bank:

This venue can host up to 900 guests, offering a flexible space that is ideal for conferences, exhibitions, and large corporate events​.

Troxy:

An Art Deco venue in East London that can accommodate up to 1,025 guests, offering extensive AV facilities and flexible catering options, making it perfect for large meetings and corporate events.​

These venues provide a range of options from historic and iconic buildings to modern, state-of-the-art facilities, each offering unique features to suit various types of large conferences and events in London.