UK wildfires: From rarity to reality and the growing insurance risk

For decades, wildfires have been seen as a risk confined to regions such as something the UK Greece, Spain or California. That perception is beginning to change.

This week’s record-breaking heat, alongside confirmation of the UK’s first recorded “megafire”, suggests Britain may be entering a new era of wildfire risk, with significant implications for agriculture, property and insurers.

A warning written in the weather

In the final days of May 2026, the UK experienced some of the most extreme spring temperatures ever recorded. Thermometers climbed to 34.8°C in London, before rising again to around 35°C, setting a new UK record for May. 

Elsewhere, the heat was almost as intense. Cardiff reached close to 33°C, while large parts of England and Wales entered official heatwave conditions. 

For context, late May temperatures typically sit between 14°C and 20°C.  The recent spike has been described as exceptional even by summer standards.  Nights offered little relief, with some areas staying above 20°C, so-called “tropical nights” that increase strain on people, land and infrastructure. 

This combination of heat, dryness and persistent high pressure creates the conditions for wildfire.

The UK’s first megafire

Against this backdrop, scientists have confirmed that a blaze in Scotland in 2025 has become the UK’s first recorded “megafire”, burning more than 10,000 hectares.

It is a landmark moment. Fires of that scale were once seen as impossible in the UK’s typically damp climate. But unusually dry conditions allowed peatland, normally waterlogged, to ignite and burn rapidly.

The concern among experts is that this may not be a one-off event, but an early warning. This marks a notable shift in how wildfire risk should be considered within the UK.

Following Europe’s path?

In southern Europe, wildfires are already a regular feature of summer. Countries such as Spain and Greece face large-scale blazes almost every year, driven by prolonged heat and dry landscapes.

The response there has become routine: fleets of aircraft scoop up seawater and drop it over remote fires, sometimes operating continuously for days.

For the UK, that kind of response remains limited. However, as temperatures rise and dry spells become more common, the comparison is becoming harder to ignore.  If 35°C days can arrive in May, the question is how many summers remain before such measures are needed here too.

Farms on the front line

The most immediate impact is being felt in the countryside. Fire already poses a major risk to UK agriculture, costing more than £100 million a year in damage to crops, buildings and machinery. 

Heatwaves make the situation worse. Dry fields and parched grass can ignite easily, turning small incidents into large fires within hours.

Livestock are also vulnerable. During recent Scottish wildfires, thousands of animals were lost as flames spread across vast areas. 

Even when farms escape direct damage, prolonged heat can reduce crop yields and strain water supplies, losses that are harder to recover through insurance.

Rising pressure on insurers

For insurers, wildfire is no longer a distant or theoretical risk. Claims linked to fires and extreme weather are already climbing, contributing to hundreds of millions of pounds in payouts each year.

The challenge is that wildfires are difficult to predict. Unlike flooding, they are not tied to fixed geographical patterns.  Instead, they depend on weather conditions, vegetation and human activity, all of which can change quickly.

As a result, insurers are being forced to adapt, using new data, satellite monitoring and more detailed risk models. In higher-risk rural areas, this could lead to higher premiums or tighter policy terms. This shift is likely to influence underwriting approaches and risk pricing across affected sectors.

A turning point

Forecasts suggest the trend is unlikely to reverse. Summer 2026 is expected to be warmer than average, with an increased likelihood of further heatwaves and temperatures pushing into the high 30s. 

The signals point to a clear trend. The UK’s first megafire and this week’s record heat are not isolated events; they are part of a wider shift.

Wildfires may never reach the scale seen in southern Europe, but they are no longer outside the UK’s experience. And as the climate continues to warm, the gap between Britain and Europe’s fire-prone regions may continue to narrow.