Britain could record its hottest-ever June temperature today - with experts warning hundreds could die from the 'killer' heat.
Forecasters predict highs of 34C (93F) in parts of eastern England such as Cambridgeshire, and 30C in the North East.
A high of 30.8C (87.4F) was recorded at Heathrow airport yesterday, with forecasters saying there is an outside chance of today's temperature beating the all-time high for the month of 35.6C (96.08F) at London's Camden Square on June 29, 1957.
The sizzling sunshine means levels of ultraviolet radiation are likely to reach high or very high levels, with the humid conditions sparking thunderstorms.
It comes as nearly 600 people in England and Wales are predicted to die as a result of this week's heatwave, researchers have found.
