BRITAIN’S longest-lasting snow patch has melted for only the tenth time in 300 years — as September’s heatwave continues.

       The icy spot, nicknamed The Sphinx, forms on a sheltered part of Braeriach mountain in Scotland’s Cairngorms.

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       The icy spot, nicknamed The Sphinx, was previously thought to be permanent - but has in fact melted ten times in 300 years, and five times since 2017 Credit: Iain Cameron / SWNS

       It was thought to be a permanent feature until 100 years ago.

       But the patch melted this week — for the fifth time since 2017.

       Meanwhile, the record-breaking heatwave will continue this weekend.

       And tomorrow is expected to be the hottest day of the year so far.

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       Temperatures are likely to climb to 33C (91F) in the afternoon.

       But hail storms and lightning could hit parts of central England and Wales.

       The Met Office's Stephen Dixon said: “The South and East will probably hold on to the hot weather the longest.

       “But we have issued a yellow weather warning for thunderstorms on Saturday afternoon for central England and eastern Wales.

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       “Some might see 30-50mm of rain; there's a possibility of hail and lightning.

       “Not everyone will see these showers; they'll pop up here and there.

       “There's a bit of a weather breakdown on the way. Some might see thundery rain but it will stay hot.”