STORY: "It's too hot for everyone to cope with because we're not used to it. So, yeah, it's too hot and it's climate change, and it's just going to get worse," Elizabeth Smith, who was visiting London on holiday, told Reuters.
Level three heat-health alerts are in place across the south, the Midlands and eastern parts of England where temperatures are soaring.
The UK's national weather service, the Met Office have said it could possibly be “the hottest day of the year so far” on Monday as a heat-health alert was issued.
The heatwave is expected to last until at least the weekend.