London Climate Action Week takes place in London from June 21 to June 29, 2025, drawing over 45,000 participants and hosting more than 700 events, making it Europe’s leading climate festival and a global center for action-oriented discussions. This year’s theme focuses on climate risk and resilience, highlighting growing concerns over extreme weather and changing geopolitical dynamics.
Business leaders emphasized the financial importance of climate resilience with the launch of the 2025 Business Breakthrough Barometer. The report revealed that 91% of executives have maintained or increased their investments related to transition efforts, and 92% believe that inaction presents a greater risk than pursuing low-carbon strategies. The message was clear: climate risk is no longer hypothetical—it’s an urgent financial issue, and resilient, low-carbon strategies are now essential for long-term competitiveness.
The UK is experiencing serious physical climate risks as the summit takes place. A prolonged heatwave with temperatures reaching up to 35°C is straining public health systems, increasing wildfire dangers, and putting unprecedented pressure on urban infrastructure, including transportation and power grids. In southern Europe, similar heat domes have pushed temperatures above 46°C, triggering emergency alerts, hospital admissions, and the first wildfires of the summer in France.
Reflecting the global scope of climate risk, Prince William highlighted that Indigenous Peoples are vital partners in both conservation and resilience efforts. His message emphasized the importance of incorporating local stewardship strategies into the larger climate agenda. Simultaneously, the event underscored the geopolitical situation: with an apparent decline in climate leadership in the U.S., London is establishing itself as a more inclusive and ambitious hub for climate diplomacy and finance.
In a city already facing extreme heat, flooding dangers, and wildfire warnings, people’s real experiences with climate events are making the idea of climate risk more concrete. They remind us that climate-smart investments, such as resilient infrastructure and green finance tools, are crucial to safeguard lives and livelihoods.
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