Brits flocked to the beach to soak up the sunshine today (Image: PA)
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The UK has recorded its hottest day of the year with temperatures almost reaching 29C.
The mercury climbed to 28.6C at Heathrow airport in west London earlier today, the Met Office said.
It comes during a spell of scorching hot weather across the UK, with the sunshine set to last until Wednesday.
It could be even hotter on Wednesday with the mercury set to hit 29C in London, according to weather.com.
This year's previous highest temperature was 28.2C in Northolt, north-west London, on June 2.
The Met Office has warned people to be prepared when heading out and about due to high UV and pollen levels across much of England and Wales.
The Met Office revealed temperatures rose to 28.6C at Heathrow today
(Image: met office)
Today's predicted high for Wales is 24C and for Northern Ireland is 17C.
The hot, dry weather is set to break from Wednesday, with a thunderstorm warning in place for the eastern half of Wales and much of England.
The warning remains in place up to and including Friday, with the Met Office saying there is potential for travel disruption and flooding.
Meteorologist Dan Stroud said: "We're likely to become increasingly changeable towards the weekend.
"There is still the potential for some more settled spells and some warm weather is possible later in the month, but it is generally turning more changeable from this weekend."
Forecaster Marco Petagna added: “Very warm but increasingly moist unstable air will reach the UK in midweek.
Temperatures could reach 29C in London on Wednesday
(Image: Getty Images)
"There is potential for significant thunderstorms in midweek as very warm air in place across the UK gets replaced by cooler Atlantic air from the west.
"The end of next week looks cooler with low pressure near the north of the UK."
It is though that up to 50mm of rain could fall over a three-hour period on Wednesday, with the Met Office issuing a warning so far in advance as they fear wild conditions.
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Pictures showed Brits flocking to parks and beaches today to soak up the glorious weather.
Yesterday, England fans descended on pub gardens to watch the game against Croatia in EURO 2020.
On Sunday, Northern Ireland and Wales recorded their warmest day of the year so far, with 27.4C in Cardiff and 25.3C at the Giant's Causeway in Co Antrim.