Conferences that connect
Up to 500 guests.
Elevate your event in the heart of London
- Prime central London location by Trafalgar Square
- Tailored setups for breakouts, keynotes and more
- Expert culinary experiences designed to fuel guests
At 8 Northumberland Avenue, we design conferences that spark ideas and cultivate connections.
Our spaces balance heritage and modernity, creating an environment where knowledge flows and networking thrives. Whether you’re hosting an intimate seminar or a large-scale forum, our approach ensures each delegate leaves feeling inspired.
Flexible conference setups that maximise the impact of your event
Capacity chart
Capacity ChartL x W x H | Sq Meters | Boardroom | Theatre | Cabaret | Reception | Banquet | Dinner / Dance | |
---|---|---|---|---|---|---|---|---|
The Ballroom | 31.4 x 12.1 x 10.3 | 380 | 60+ | 500 | 250 | 700 | 440/500* | 100/464* |
The Old Billiard Room | 30.4 x 11.4 x 5 | 346 | 60+ | 350 | 180 | 500 | 250/270* | – |
Annex | 16.7 x 8.8 x 4.5 | 147 | 46 | 105 | 56 | 225 | 140 | – |
Salon | 11.8 x 5.2 x 4.5 | 61.4 | 26 | 70 | 32 | 100 | 40 | – |
The Parlour | 5.5 x 3.4 x 4.5 | 18.7 | 10 | 10 | – | 15 | – | – |
Victoria | 11.8 x 5.2 x 4.5 | 61.4 | 25 | 70 | 40 | 100 | 50 | – |
Library | 6.5 x 3.75 x 4.5 | 24.4 | 15 | – | – | – | – | – |
Small Boardroom | 3.15 x 3.8 x 2.06 | 11.9 | 8 | – | – | – | – | – |
Smaller Meeting Rooms | 5.5 x 3.4 x 4.5 | 18.7 | 10 | 10 | – | 15 | – | – |
* This layout is with tables of 12 instead of 10. Banqueting capacities do not factor in a stage set so numbers will reduce
“Our event manager ensured a seamless experience, communicating consistently and accommodating all our requests with ease. Their expertise, transparency, and calm approach made the entire process smooth and enjoyable. I look forward to booking with 8 Northumberland Avenue again.”
Mabel Laditan – Pmo DeloitteGallery
Gallery

Let’s make history
Events that put you at the centre of everything. Get in touch for memorable, bespoke experiences with service at their core.
Access to the centre of London
8 Northumberland Avenue is located within a short walk of major transport links, ensuring delegates arrive with ease. Our venue offers step-free access, nearby parking options and a central location convenient for both domestic and international travel.
For more information, contact our team to discuss specific accessibility needs.
Frequently asked questions
Proactive, never reactive. We’re experts at anticipating needs — starting here. View our full set of FAQs for event-defining details.
Yes, we have multiple rooms that can be used for breakout space and smaller meeting rooms that can also be used for this purpose.
We have an internal AV team called Opal Fusion that are based at the venue who can support live streaming and any other audio-visual requirements.
We offer a complimentary wifi service. You will find the password displayed by the cloakroom on arrival and can be displayed on our poseur tables during the arrival coffee break.