Europe heatwave live: ‘London is cooking,’ says UN chief as UK forecast to hit 38C; France has hottest night since records began

António Guterres urges world to act on fossil fuels as continent braces for record-breaking heat; French PM to hold emergency meeting after heat deaths

Tell us: how is the heatwave in the UK and across Europe affecting you?

Two children found dead in car in France as heatwave hits Europe

Italy’s health ministry has declared a red heatwave alert in 15 cities including Milan and Rome on Tuesday and said the number would go up to 16 on Wednesday.

During a red alert – the highest level – the ministry advises people to eat light, stay indoors in the hottest parts of the day and sprinkle themselves with cool water.