Temperatures across England are expected to soar by 10C over the coming days, placing a lot of pressure on travel and hospital services.
On average, the mercury will remain in the mid-20s before the weekend kicks off, by which point it will quickly rise to around 35C.
Many public services across the UK are already under pressure from the hot weather, with the NHS facing a "surge" in demand from heat-related admissions.
It comes after the Met Office issued an "amber" extreme heat warning for most of England and Wales which will remain in place from Sunday until Tuesday.
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