Summer in London means one thing: taking the party outside. Whether you're after a rooftop terrace with skyline views, a secret garden tucked away from the traffic or a waterside spot where the drinks stay cold and the atmosphere stays buzzing, the capital's bar scene comes alive when the sun's out. Here are 10 brilliant bars where you can soak up the rays and raise a glass.
1. Pergola on the Wharf
Pergola on the Wharf
Floor-to-ceiling windows flood the interior with light, while the 150-capaCity terrace wraps around the entire venue with views over Canary Wharf's northern dock. The combination of indoor-outdoor flow and serious scale makes this work for summer parties: you've got room for 700 guests, two substantial bars, an open kitchen and that outdoor breathing space when the sun's out. Canary Wharf tube is right there too.
Location: Canary Wharf
Capacity: 150 Standing
2. Mezcalito Chelsea
Mezcalito Chelsea
The retractable roof gives you the best of both worlds: open-air buzz when the weather's on your side, covered comfort if it changes. With 500 agave spirits behind the bar and Mexico-inspired cocktails that'll do the heavy lifting, this Chelsea spot brings serious drinks credentials to a summer do. Up to 100 guests on The Terrace works for team celebrations or client events, and South Kensington tube is a short walk away.
Location: Chelsea
Capacity: 100 Standing
3. Pergola Brixton
Pergola Brixton
Pergola Brixton brings rooftop energy to South London with a retractable roof that lets you make the most of sunny afternoons. The DJ-friendly setup and capacity for 600 means you can throw a summer bash, while the location directly above Brixton Village gives your guests access to street food from the market below. The venue's bar-led vibe and outdoor terrace feel keep things relaxed, and Brixton tube is on your doorstep.
Location: Brixton
Capacity: 600 Standing
4. The HAC (Honourable Artillery Company)
The HAC (Honourable Artillery Company)
The Artillery Garden is five acres of historic outdoor space right in the City, which gives you serious scale for summer celebrations. You can host up to 5,000 guests on the lawn, making it ideal for company-wide summer parties, sports days or team-building events that need breathing room. The club-style setting brings character without the stuffiness, and Old Street tube means your guests won't struggle with transport. Just note the no-amplified-music rule: acoustic acts only, but the venue has a roster of musicians ready to go.
Location: Old Street
Capacity: 5000 Standing
5. Riverside East
Riverside East
This East London venue puts you right in Queen Elizabeth Olympic Park with a rooftop terrace and a huge outdoor yard that holds up to 1,000 guests. The built-in AV, screen and PA system means you're sorted for presentations or speeches without hiring extras, and the on-site bar keeps the drinks flowing without fuss. Stratford International is close by for easy access, and the combination of outdoor space and ready-to-go tech makes it work for big summer celebrations that need a bit of polish.
Location: 5 Thornton Street
Capacity: 1000 Standing
6. Summer Season 2026: Somerset House X Moving Venue
Summer Season 2026: Somerset House X Moving Venue
Somerset House's Edmond J. Safra Fountain Court is one of London's most recognisable settings, and this limited-season takeover adds purpose-built structures and shelter without losing the open-air atmosphere. You can host up to 2,500 guests for a reception or seat 500 for dinner, with Moving Venue handling the catering and state-of-the-art production already in place. Temple and Covent Garden tubes are both close, and aligning your summer party with this cultural landmark brings brand kudos. The courtyard's backdrop does a lot of the heavy lifting.
Location: Covent Garden
Capacity: 2500 Reception
7. Honourable Society of Lincoln's Inn
Honourable Society of Lincoln's Inn
Lincoln's Inn brings historic grandeur to your summer celebration, with a North Lawn that holds up to 450 guests and a Great Hall Terrace for alfresco receptions with architectural drama. The stretch tent option on the lawn gives you flexibility, while the indoor-outdoor flow means guests can spill from the terrace into the Great Hall for music and dancing until midnight. Holborn Station keeps transport simple, and in-house catering means one less supplier to wrangle. It's a refined setting that doesn't feel stuffy, perfect when you want a bit of occasion without sacrificing the summer-party atmosphere.
Location: High Holborn
Capacity: 450 Standing
8. Sands End
Sands End
Sands End gives you 20 acres of landscaped gardens and walnut groves just 10 minutes from Parsons Green tube, which is rare for London. The Courtyard and Grounds hold up to 500 guests, making it work for big company-wide summer parties that need outdoor scale without leaving the city. The sustainable design and RIBA-award-winning architecture bring visual interest, while the flexibility to combine the main hall with outdoor space means you've got shelter if the weather turns.
Location: Fulham
Capacity: 500 Reception
9. Charterhouse Square
Charterhouse Square
Charterhouse Square brings exclusive access to a historic setting in the heart of Barbican, which is hard to find in central London. The all-inclusive package wraps up venue hire, food, drinks and entertainment in one go, taking the logistical headache out of summer planning. With capacity for up to 450 guests under a stretch tent, plus a covered outdoor bar and live acoustic entertainment, it's built for long summer evenings where your team can relax without you chasing suppliers. Barbican tube is a short walk away.
Location: Barbican
Capacity: 450 Standing
10. The Royal Horseguards Hotel and One Whitehall Place
The Royal Horseguards Hotel and One Whitehall Place
The Outside Terrace at The Royal Horseguards Hotel gives you riverside views of the Thames and the London Eye, a rare find in Westminster. With capacity for 100 guests and a connection to the indoor Terrace Room, you've got flexibility for drinks receptions or summer barbecues without being entirely at the mercy of the weather. Embankment tube is on your doorstep, and the Victorian grandeur of the building adds polish to a relaxed outdoor celebration.
Location: Westminster
Capacity: 280 Reception
London's summer bar scene gives you options from historic gardens to rooftop terraces with skyline views, and the right setting makes all the difference to your event. Whether you're planning a big company-wide bash or an intimate team celebration, these venues bring outdoor atmosphere, transport links and practical details that actually work. get in touch with the Hire Space team to find the perfect spot for your summer party.
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Leanne Carr, Co-Head of Event Sales at Hire Space, is a venue finding expert with a degree in Hotel and Events Management. Based in Oxfordshire, she brings 6 years of industry experience to the team.
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