The Met Office has refused to rule out a repeat of last year's 40C scorcher as summer began on Wednesday (June 21).
As thousands of revellers gathered at Stonehenge to celebrate summer solstice forecasters warned that another record breaking high is "not impossible".
Heathrow saw the mercury rise to a staggering 40.2C on July 19, 2022 - the highest temperature recorded in UK history and 1.5C more than the previous record of 38.7C, recorded in 2019 in Cambridge.