London’s emergency services have spent over £11 million tackling the devastating effects of climate change since 2018, according to new data released by City Hall. The funds have been used to combat a surge in wildfires and flash floods, highlighting the real-world cost of the climate emergency hitting the capital.
A written question to the Mayor of London revealed that the London Fire Brigade (LFB) has spent more than £5.4 million responding to 808 wildfires in the past seven years. The summer of 2025, officially the UK’s hottest on record, saw four separate heatwaves that left parks and green spaces tinder dry, sparking dozens of major blazes.
Wildfires on the Rise as Summers Get Hotter
So far this year, London has faced 21 major wildfire incidents, costing taxpayers £766,000 and requiring the deployment of over 4,000 firefighters. Officials confirmed that all of these fires were started by people – often accidentally through discarded cigarettes or barbecues.
The borough of Havering has been the worst affected, recording 158 wildfires since 2018, including the Wennington blaze of 2022, which destroyed more than a dozen homes. Alarmingly, Havering has already seen 37 wildfire incidents this year, up from just eight in 2018.
Mayor Sadiq Khan warned that climate change is having a “devastating impact on our environment” and that raging wildfires are no longer a distant threat but “on London’s doorstep.”
Flooding Costs Soar as Rainfall Becomes More Extreme
Alongside the fires, London faces an escalating battle with flash flooding. The cost of tackling floods has reached £5.86 million since 2018, with 195 flood incidents in 2025 alone costing £557,883.
The Greater London Authority has identified flooding as the biggest environmental risk facing residents. Its analysis shows that nearly half of London’s hospitals and a fifth of schools are now at risk, while more than 500,000 homes and businesses sit within flood-prone zones.
Leonie Cooper, Labour’s Environment Spokesperson on the London Assembly, said:
“This is not a warning of what climate change might do; this is what it is doing to London today.”
London Fire Brigade Responds with New Climate Resilience Measures
In response to the escalating climate crisis, the LFB has invested in new wildfire equipment and training, learning from recent summers’ devastating incidents. However, experts warn that reactive measures will not be enough to prevent future emergencies.
Environmental advocates are calling for long-term investment in resilience, including greener urban planning, cooler homes, and sustainable drainage systems to cope with both extreme heat and flash floods.
The Real Cost of Inaction
As London faces the dual threats of fire and water, the £11 million spent by emergency services stands as a stark reminder that the cost of inaction on climate change is already being paid.
Beyond the financial toll, the rising frequency of extreme weather events threatens the safety, infrastructure, and future resilience of the capital – proving that climate change is no longer a distant concern, but an urgent reality for Londoners today.