UK heatwave: Amber warning in place as UK has hottest day of the year

Scientists are alarmed at the high fatality rate and rapid spread of a new variant of the virus.

Scorching temperatures may affect people’s health and disrupt transport, the Met Office says.

EU nationals and those transporting goods internationally can return – if they have a recent negative test.

The prime minister is likely to stay on as caretaker while President Emmanuel Macron chooses a successor.

The incident has sparked concern over the vulnerability of the world’s interconnected technologies.