Our summer party spaces
Argyll Room & Terrace – Up to 200 guests
The Argyll Room is a beautiful first-floor space, with elegant gold detailing and bow windows at each end, creating an inviting atmosphere for your summer party. A rarity for London, the west-facing private rooftop terrace offers amazing views overlooking Hyde Park, making it perfect for barbecues in the sunshine or evening receptions whilst the sun sets over Westminster. And because the British weather can often be unpredictable, the terrace is available with a stretch tent covering half of the terrace, so the party can continue, no matter the weather.
Key features: First floor location • Private terrace • Incredible views of Hyde Park • Wet weather contingency plan (stretch tent)
Bill Boeing Lecture Theatre – Up to 200 guests
Our largest event space is the Bill Boeing Lecture Theatre, a blank canvas space which can be transformed for summer parties of up to 200 guests. Coloured ceiling LED lights illuminate the space in your chosen colours, an in-house PA sound system fills the room with sound, and a dedicated AV technician ensures everything runs smoothly. All fully air-conditioned, the Bill Boeing Lecture Theatre is well-equipped to keep guests comfortable throughout the event.
Key features: Largest blank canvas space • Full AV setup • LED lighting & projector • Dedicated technician support
Marshall of Cambridge Room & Foyer – Up to 120 guests
Adjoining the Bill Boeing Lecture Theatre, the Marshall of Cambridge Room & Foyer can accommodate up to 120 guests for summer receptions or 50 guests for seated dining. Flooded with natural light and lined with classic décor, it’s a setting that makes every summer party feel special.
Key features: Ground floor location • Natural lighting • Suited to smaller occasions • Adjoins the Bill Boeing Room
Handley Page Room – up to 50 guests
Located on the second floor, the Handley Page Room offers fantastic west-facing views overlooking Hyde Park, which will leave your guests in awe. For larger summer receptions, this space pairs effortlessly with the Sopwith Room located opposite.
Key features: Second-floor location • Views overlooking Hyde Park • Advanced AV facilities • Adjoins the Sopwith Room
Summer party catering
Our catering partner, Company of Cooks, shares our passion for excellence and will create spectacular summer party experiences for your guests. Enjoy sizzling BBQs on the roof terrace with Hyde Park views below, vibrant sharing boards in the sunshine, and elegant canapés that keep the conversation flowing. Each dish has been crafted using seasonal, locally sourced ingredients, with no compromise on flavour or presentation.
Summer party entertainment
Greet guests with gorgeous, bespoke floral displays upon arrival, DJs to keep the party energy high, or even a crowd-pleasing chocolate fountain. Our team work with incredible suppliers who can make all of this happen; every element of your event can be tailored to match your theme or vision. Please reach out to our team to see how we can help to bring your summer party vision to life.
Summer party packages
Our summer party packages include everything you need to make your summer celebrations truly unbeatable at No.4 Hamilton Place. Marvel at the incredible views overlooking Hyde Park in the Argyll Room & Terrace, and enjoy a selection of vibrant dishes provided by our in-house catering team, Company of Cooks. Complement your menu choices with a range of refreshments, from sparkling cocktails and mocktails to tasty champagnes and elegant wines. Keep the refreshments flowing all evening with one of our drink packages, including unlimited house wine, beer and soft drinks. And throughout it all, our dedicated events team will handle every detail behind-the-scenes, so you can focus on enjoying the occasion.
- Hire of the Argyll Room & Terrace
- Catering by Company of Cooks, with the choice of BBQ menus, canapés, and bowl food dishes
- Drinks including cocktails, mocktails, wine, and soft drinks
- Dedicated events team
View our Spring / Summer 2026 standing reception menus
Book your Mayfair summer party at No.4 Hamilton Place
Your summer party starts with a conversation. Call our friendly team on 020 7670 4313, email hello@4hp.org.uk, or fill in our enquiry form today to make this summer one to remember.
FAQs
No.4 Hamilton Place can accommodate up to 200 guests for your Central London summer party, in either the Argyll Room & Terrace or the Bill Boeing Lecture Theatre. We also have several spaces available for more intimate summer celebrations, including the Marshall of Cambridge Room and Foyer and the Handley Page Room.
Yes. The Argyll Room has a fantastic private roof terrace which overlooks Hyde Park, perfect for receptions and barbecues of up to 200 guests.
Yes, you can hire just one room, or the whole venue. Our spaces flow seamlessly for events requiring the full venue, or multiple rooms.
We have several food options available for summer parties, including delicate canapés, vibrant bowl foods, gourmet BBQ menus, and seasonal sharing boards. Complement your dishes with our extensive drinks list, including wines, cocktails, and soft drinks.
Yes. Our catering partner Company of Cooks offer options to accommodate guests with dietary requirements, including vegan, vegetarian, gluten-free, and allergy-sensitive choices. We’re also happy to work closely with clients to tailor our menus to suit individual preferences or restrictions.
Located in the heart of Westminster, No.4 Hamilton Place is surrounded by excellent transport links. Both Hyde Park Corner and Green Park tube stations are a short walk away, and there are multiple bus stops within a five-minute walk of our venue. Our closest train station is Victoria (15-minute walk) and Paddington (15-minute taxi or short bus ride). Plus, we have a taxi rank just outside our front door.
