Planning a conference in London isn’t an easy task, but finding the right venue can make all the difference. At No.4 Hamilton Place, our Grade II-listed Edwardian townhouse in the heart of Mayfair offers an inspiring and elegant setting for corporate conferences and private meetings that feel a little more special.
Located moments from Hyde Park Corner and surrounded by excellent transport links, our London events venue can accommodate conferences ranging from 20 to 200 guests.
Discover what makes No.4 Hamilton Place a standout choice for your next small conference below.
Why choose No.4 Hamilton Place as your conference venue?
We asked our events team what sets No.4 apart from other conference venues in London. The answer? Charm, history, and an outdoor space that makes all the difference.
“Our venue has charm and history. Not all hotels and venues in London have this”, says Events Sales Manager, Heather Sabonjian. “We also have an outdoor space for lunch and breaks – perfect for those all-day conferences, as guests love a bit of fresh air. It makes all the difference to concentration in the afternoon.”
When asked which space is her favourite for hosting conferences, Heather said: “The Bill Boeing is the best space for hosting conferences. It has all the necessary AV equipment that you need. I always call it ‘the event manager’s dream space’.”
The Bill Boeing Lecture Theatre: a space built for conferences
Our largest space at No.4 Hamilton Place is the Bill Boeing Lecture Theatre: a blank canvas space that is perfectly equipped as a Westminster conference room.
The Bill Boeing Lecture Theatre can accommodate 200 guests theatre-style and boasts sophisticated audio-visual technology, including:
- In-house PA sound system
- Stage lighting
- Wall-mounted screens
- Lectern and microphone
- Tabletop microphones
- Three-chip data projector
- Comfort monitor on lectern
Additionally, this versatile space includes the services of a fully qualified technician to ensure everything runs smoothly on the day of your event.
Conference rooms at No.4 Hamilton Place
From the fantastic Argyll Room & Terrace to the elegant Sopwith Room, we have several smaller spaces well-suited to intimate conferences in Mayfair.
Located on the first floor, the Argyll Room offers an elegant setting featuring stunning gold detailing and crisp white walls, creating a bright and inspiring atmosphere for delegates. Plus, this space benefits from a fantastic roof terrace overlooking Hyde Park, perfect for some fresh air post-conference.
Key features: Private roof terrace overlooking Hyde Park • Capacity of up to 100 guests’ theatre style • Natural daylight • In-built PA system
Adorned with classic décor and plenty of natural daylight, the Marshall of Cambridge Room & Foyer can host theatre-style conferences of up to 40 guests. Adjoining the Bill Boeing Lecture Theatre, this space provides a useful area for guest registration or refreshments.
Key features: Ground floor space • Capacity of up to 40 guests’ theatre style • Area for registration desk and catering breaks • Natural daylight
With large bay windows allowing plenty of natural light and available with various AV facilities, the Sopwith Room is ideal for conferences. This second-floor space can host up to 40 guests theatre-style or works well as a breakout space for up to 20 guests in a boardroom-style setup.
Key features: Second floor space • Capacity of up to 40 guests’ theatre style • Adaptable to different event set-ups • Works well alongside the Handley Page Room located opposite
Conference catering with Company of Cooks
Great food goes a long way at a conference, and we’re delighted to work with Company of Cooks as our in-house catering partner.
Our Day Delegate Rate (DDR) package has a wide range of catering options, including hot fork buffets and homemade treats. For something lighter, clients can opt for working sandwich lunches, fresh salads, or even poke bowls. Whatever your guests preferences, Company of Cooks will have it covered.
View our Spring/Summer conferences and meetings menu for 2026, including our DDR pages, here.
Expert conference event management in Mayfair
From the initial planning stages through to the day itself, our team is heavily involved in bringing your conference to life. We’re on hand to help source everything from floristry and entertainment to décor, so whether you have a clear vision or need a little inspiration, we’re here to help.
Trends we’re seeing in corporate conferences
We asked Heather what trends she’s noticing in corporate conferences in Westminster, and she mentioned the following:
- Lots of breakout spaces for smaller group sessions
- Conferences are split into groups of two or three, making it more interactive
- Most conferences are booking post-event drinks and canapés, allowing guests to unwind and network afterwards.
Host your next conference in Westminster
Whether you’re planning an intimate half-day session or a full-day conference, No.4 Hamilton Place has everything you need to make it a success. To host your next corporate event in Westminster with us, please call us on 020 7670 4314, email hello@4hp.org.uk, or fill in our enquiry form.
