The highest recorded temperature in Wales is now 37.1 degrees C, breaking a record set earlier the same day and the previous record set in 1990, according to provisional figures.
Much of England is also under a heatwave on Monday, with some school closures and airport runways melting.
A 16-year-old boy drowned in Bray Lake near Maidenhead, Berkshire, but Downing Street said on Monday afternoon that the NHS was “coping well” at the time, with no other heat-related fatalities.
The UK Health Security Agency has issued a level 4 heat-health alert for all regions of England for the first time since the system was introduced in 2004. The Met Office has also issued the UK’s first red extreme heat warning. Both are running from Monday to Wednesday….