London Climate Action Week 2026: Where to Host Your Event in the City

For one week every June, London becomes the climate capital of the world. London Climate Action Week (LCAW) 2026 runs from 20–28 June 2026, across those nine days the city fills with summits, panels, workshops, launches and late-night conversations about the future of our planet. It’s Europe’s largest climate festival, drawing more than 45,000 people and this year the demand for the right space to gather in is higher than ever.

If you’re planning to be part of it the venue you choose says as much about your message as the words on the stage. Here’s what’s happening during LCAW 2026, what makes a space genuinely fit for a climate-focused event, and how to host yours somewhere that walks the talk.

What is London Climate Action Week?

London Climate Action Week is an annual, city-wide climate festival founded in 2019. Rather than a single conference, it’s an open platform: hundreds of organisations, from policymakers and global financiers to grassroots community groups. The result is a sprawling, energising programme that turns the whole city into a venue for a week.

Crucially, anyone can register an event as part of LCAW, free of charge, through the official programme. That openness is exactly why event space enquiries spike every spring: businesses, charities and networks all want to host something of their own, and they need somewhere to do it.

When is London Climate Action Week 2026?

LCAW 2026 takes place across nine days, 20–28 June 2026. A few anchor moments to plan around:

• Climate Innovation Forum opens the week on Monday 22 June at Guildhall, gathering thousands of leaders from business, policy and finance.
• The Blue Earth Innovation Hub and Forum runs 26–28 June in Shoreditch, spotlighting climate-tech and investment.
• Hundreds of partner-led talks, roundtables, workshops and receptions fill the days and evenings in between, right across the city.

Why LCAW is the moment to bring people together?

There’s a reason the diary fills up fast. During LCAW, the usual barriers to a great turnout drop away, the right people are in town, conversations are flowing, and there’s a genuine appetite to connect over shared purpose.

Whether you’re hosting a thought-leadership panel, a product launch, a partner reception, an investor breakfast or a community workshop, LCAW gives your event a ready made context and a motivated audience. It’s a chance to put your organisation’s purpose into a room with the people who can act on it.

What makes a venue right for a climate-focused event?

Hosting a sustainability event in a space that quietly undermines your message is a credibility risk most organisers can’t afford. When you’re choosing where to gather during Climate Action Week, look for:

• Verified sustainability credentials, not vague claims. B Corp certification, BREEAM accreditation and science-based emissions targets are signals you can stand behind on stage.
• A space designed around wellbeing, natural light, fresh-air ventilation, real planting.
• A central, well-connected location that keeps travel emissions and travel time low for attendees coming from across the city.
• Flexible event areas that can flex from an intimate roundtable to a full reception without feeling cavernous or cramped.
• In-house support and catering so your team can focus on the conversation, not the logistics.

Tick those boxes, and your venue stops being a backdrop and starts being part of the story.

Host your London Climate Action Week event at Uncommon

Uncommon makes exceptional spaces for work and for the moments that matter around it. As a certified B Corp with BREEAM accreditation across our London locations and science-based targets committing us to deep emissions cuts, sustainability isn’t a feature we bolted on for the week. It’s how our spaces are built and run all year round, with leading-edge ventilation, rich biophilia and wellness designed into every floor.

We have five spaces across the city, each well-connected and ready to host:

• Uncommon Borough — a South London rooftop with standout skyline views, moments from Borough Market and London Bridge.
• Uncommon Liverpool Street — in the heart of the City, ideal for finance and corporate audiences.
• Uncommon Holborn — a landmark between the City and the West End, full of natural light.
• Uncommon Fulham — relaxed and creative, with riverside walks and independent cafés on the doorstep.
• Uncommon Highbury — surrounded by greenery in a fast-growing North London neighbourhood.

From panels and workshops to receptions and launches, our event spaces come with in-house support, sustainable catering with Pow Food and thoughtfully designed rooms that reflect your values back to your guests. For an LCAW event, that alignment between message and space is the whole point.

Five quick tips for planning a sustainable LCAW event

1. Register early. Listing your event on the official LCAW programme is free and puts you in front of the festival’s audience but the best dates and slots go quickly.
2. Choose a low-emissions location. A central, transit-friendly venue cuts both travel time and carbon for your attendees.
3. Brief catering on plant-forward, low-waste menus. It’s an easy, visible way to live your theme.
4. Go light on print. Digital invites, QR code agendas and reusable signage keep things lean.
5. Capture the conversation. Record your panel or workshop so the impact carries on long after the weekends and gives you content to share.

Ready to host your event during London Climate Action Week 2026?

Spaces during LCAW are in high demand and they’re booking up now. If you’d like to host your event somewhere that genuinely shares your values, we’d love to help you make it happen.

Enquire about event space at Uncommon, tell us your dates, your numbers and what you’re planning, and our team will find the right space for you.