Britain is hurtling towards the hottest day of the year, with temperatures set to hit 35C as experts warn the country faces an “exceptionally severe” wildfire risk after weeks of scorching, rain-free weather.
The UK’s fourth heatwave of 2026 is expected to peak on Wednesday, bringing blistering conditions across southern England and prompting health officials and firefighters to issue urgent warnings.
The UK Health Security Agency (UKHSA) has placed London, the South East, the East of England and the East Midlands under an amber heat-health alert, warning that soaring temperatures could pose serious risks, particularly for older people, young children and those with existing health conditions.
But it is the growing fire danger that has sparked the greatest concern.
The Met Office has warned that if fires ignite in parts of London, the South East or eastern England on Wednesday, they could become “exceptionally severe” because of tinder-dry vegetation left parched by weeks of hot weather.
Across England and Wales, firefighters have already battled 706 wildfires this year, with an alarming 208 outbreaks recorded in just the past 12 days, according to the National Fire Chiefs Council (NFCC).
Fire chiefs say eight major wildfire incidents are currently being monitored nationwide, with crews continuing to tackle a significant blaze at Tintwistle Moor in Derbyshire, where around 60 firefighters have been deployed.
The warning comes as parks across Britain have turned brown under the relentless sun. Images from London’s Blackheath show vast stretches of dried-out grass, while Royal Parks staff have even been advised not to leave deckchairs beneath trees amid fears heat-stressed branches could suddenly collapse.
Although the UK is not yet experiencing the devastating infernos seen across Spain, France and Greece, where thousands have been evacuated this summer, fire experts warn Britain is becoming increasingly vulnerable.
NFCC chairman Phil Garrigan said the recent surge in fires showed “how quickly the risk can escalate when hot, dry conditions take hold.
He warned that climate change means the UK should expect larger, more frequent and more complex wildfires in the years ahead, increasing pressure on already stretched emergency services.
Officials say many wildfires are entirely preventable and are urging the public not to discard cigarettes, use disposable barbecues in open spaces or leave behind litter that could ignite dry vegetation.
With July running around 3C warmer than average and potentially ranking among Britain’s hottest on record, emergency services are urging people to remain vigilant.
As Britain swelters through another day of extreme heat, the message from firefighters is simple: one careless spark could be all it takes to turn parched countryside into the next major wildfire.
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