London Climate Action Week (LCAW) returns from 20th to 28th June 2026, and with hundreds of events spread across nine days, knowing where to be is half the challenge. This guide to London Climate Action Week 2026 brings together the sessions worth your time, including the three events AlliedOffsets is hosting and a shortlist of standout events from across the wider program.
Whether it is your first LCAW or your eighth, use this as a starting point for planning the week.
What is London Climate Action Week?
LCAW is the largest city-wide climate festival in Europe and one of the busiest weeks in the global climate calendar. It runs as an open platform: the organizers set the dates and main program, and hundreds of organizations host their own events under the LCAW banner.
- Founded in 2019
- Around 45,000 attendees each year
- More than 700 events in 2025
The full schedule lives on the official LCAW program. This guide is a curated route through it.
We are hosting three events across the week, from a policy panel on carbon removals to an evening of drinks.
Building the CDR market of tomorrow
24th June, 9:00 to 11:00am
Carbon dioxide removal (CDR) is at an inflection point. As voluntary CDR markets mature and compliance frameworks take shape, not least here in the UK, the question of how to build markets that are credible, scalable and policy-coherent has never been more pressing.
This event brings together experts from across science, policy and market development for a panel discussion and Q&A. The morning opens with a networking breakfast, followed by a short introduction to TRACEcdr, an interactive monitoring, reporting and verification (MRV) and carbon accounting tool developed by the Grantham Research Institute at LSE and powered by AlliedOffsets.
Panellists include Jonathan Lindsell (DESNZ), Paul Zakkour (Carbon Counts), Mai Bui (Supercritical) and Anton Root (AlliedOffsets).
Connect over Carbon: Networking Drinks
25th June, 18:00 to 21:00
After a busy week of panels and meetings, join us for a relaxed evening of drinks and networking. AlliedOffsets, Forliance and Offset8 Capital are bringing together professionals from across carbon markets and the wider sustainability space for an informal gathering. A chance to connect over a pint (or two) with others working across the sector.
Breakfast and Learn: Carbon, Coffee, and Cards
26th June, 9:00 to 11:00am
Join AlliedOffsets and Nature Broking for a data-led breakfast covering the voluntary carbon market in 2026 so far. Maria, Data Lead at AlliedOffsets, will share the latest trends across retirements, issuances, pricing, offtake activity and investment flows, with a close look at where the market is growing across nature-based and technological methodologies.
Luke Baldwin, CEO of Nature Broking, will bring a complementary market perspective, sharing insights from their work with buyers and suppliers and reflecting on how evolving trends are shaping transactions and strategies.
Following the presentations, we will dive into Nature Broking's Carbon Card Game, a hands-on tool for understanding carbon markets, natural capital and sustainability regulation. Just 60 cards, small tables led by a Nature Broking expert, and a lot of discussion.
Four more LCAW 2026 events worth your time
The official program is vast, so here are four events across the week that stand out for anyone working in carbon markets and climate finance.
Climate Bonds CONNECT 2026
23rd June, 08:30 to 17:00 | The Brewery, 52 Chiswell St, London EC1Y 4SD
The Climate Bonds Initiative's flagship annual sustainable finance conference. The agenda spans the sustainable investment pipeline, nature investing, energy security and clean energy, financial opportunities in methane, resilience finance in emerging markets, and credible use of proceeds. The Climate Bonds Awards are announced on the day. Hybrid event, with priority registration for Climate Bonds Network members.
NCS Alliance Events at LCAW (hosted by Abatable and partners)
Across the week, 22nd to 25th June
A week-long series exploring practical, science-backed approaches to delivering Natural Climate Solutions (NCS) carbon credits that achieve real climate, biodiversity and social impact. Co-hosted with Conservation International, Chloris, ERM, BeZero Carbon, Fauna & Flora, Kita, Revalue, Sylvera, Plan Vivo and We Are Level. Built for businesses, investors and stakeholders focused on high-integrity carbon projects. Full program and registration via the WBCSD.
IETA Carbon Accounting Roundtable
Week of 20th June, 16:30-18:00 and venue RioTinto, 6 St James’s Square – London, SW1Y 4AD
An interactive session from the International Emissions Trading Association, convening senior industry figures, market experts and non-government leaders to share insights across the carbon accounting, disclosure and reporting landscape. Held under the Chatham House Rule.
LSEG Finance Live
22nd - 25th June | 8:30-9:30am BST
A daily broadcast show powered by the London Stock Exchange Group and the Green Finance Institute, underpinned by Reuters editorial. It brings together investors, banks, companies and policymakers, featuring more than 100 voices across the week. A useful daily pulse-check on the forces shaping climate finance.
Making the most of the week
With hundreds of events across the week, a little planning goes a long way. Browse the official LCAW program early, shortlist the sessions that matter to you, and register for the popular ones before they fill up.
Our three events run from 24th to 26th June, and you can register for each above.