London Climate Action Week: Day 1

Putting Super Pollutants on the Global Agenda at London Climate Action Week 2025

The Climate and Clean Air Coalition Secretariat is on the ground in London this week for the 7th edition of London Climate Action Week (LCAW), taking place from 21–29 June. With nearly 45,000 participants expected, this year’s LCAW is bringing together global leaders, experts, and advocates to drive ambitious climate solutions ahead of COP30.

Throughout the week, the CCAC is spotlighting the urgent need for action on super pollutants, including methane, black carbon, hydrofluorocarbons, tropospheric ozone, and nitrous oxide, which are responsible for approximately half of global warming and a major cause of air pollution. Reducing these pollutants is one of the fastest, most cost-effective ways to slow climate change and protect human health.

Yesterday, the CCAC kicked off its LCAW programme with two high-impact events: a Methane Finance Workshop, convening donors, financial institutions, and partners to explore strategies for scaling finance and unlocking investment in methane mitigation, and a House of Lords Super Pollutant Strategy Session, bringing together policymakers, thought leaders, and experts to build political momentum behind ambitious super pollutant action on the road to COP30.

These events set the tone for a critical week of engagement. With the CCAC Board Meeting taking place on Thursday and Friday (26–27 June), we look forward to further elevating global efforts to tackle super pollutants and showcasing the North–South leadership of our Co-Chairs, the United Kingdom and Brazil.

Stay tuned throughout the week to keep up on CCAC’s activities in London, and view the full list of CCAC-organized events here: CCAC at London Climate Action Week 2025 

Scaling Methane Finance Workshop

The CCAC, Global Methane Hub, Super Pollutant Action Alliance and the Quadrature Climate Foundation hosted a closed-door methane finance workshop bringing together country partners, philanthropic organizations, civil society, and multilateral development banks to tackle the pain points in scaling in accessing methane finance with a focus on agriculture and waste sectors. The workshop featured presentations on how public funders like CCAC, the World Bank, and IADB can align efforts to support country-focused mitigation efforts, followed by an open discussion on where enabling co-investment is needed to address major finance gaps, where grant and lending programs can maximize mutual benefits, and persistent knowledge and tool gaps to be addressed. The workshop was followed by a high-level luncheon.  

Super Pollutant Strategy Session in the House of Lords  

The House of Lords Super Pollutant Strategy Session, co-hosted by the CCAC, the Environmental Investigation Agency (EIA), and Lord Duncan of Springbank, brought together political leaders, government representatives, philanthropies, international organizations, and climate experts to chart a path toward greater ambition on super pollutants in the lead-up to COP30. Framed by the urgency of the moment and worsening climate impacts, the session highlighted the outsized importance of fast action on super pollutants. Participants stressed that methane alone is responsible for a significant portion of current global warming, and unlike CO₂, which can persist in the atmosphere for thousands of years, rapid reductions in methane offer near-immediate climate and air quality benefits. Several speakers underscored the need for governments to back their international leadership with stronger domestic action, such as national methane strategies and regulatory reforms across key sectors like oil and gas, waste, and agriculture.

The conversation also focused on the practical levers for progress: scaling predictable finance for methane mitigation, ensuring political durability of climate commitments, and using existing trade, satellite, and market-based tools to track and reduce emissions. Subnational governments emphasized their critical role in driving forward super pollutant strategies despite national-level uncertainties, while philanthropic and policy leaders called for a clearer, more compelling narrative to mobilize public support and political will. The Global Methane Pledge, launched at COP26 in Glasgow, was repeatedly referenced as a foundation to build on, not just through expanded membership, particularly from major emitters, but through real implementation and accountability. Participants agreed that London Climate Action Week, and the CCAC’s role within it, is a key moment to elevate super pollutants on the global agenda and lay the groundwork for a heightened focus on super pollutants at COP30.

See photos from London Climate Action Week here.

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