Temperatures could hit 30C in the UK this week, but the warm weather also brings the risk of thunderstorms

The intense rainfall could see 20 to 40mm of rain in just a few hours, the Met Office warned

A yellow weather warning has been issued for thunderstorms heading into the weekend

The UKHSA heat-health alert, the first of its kind this year, is active from 9pm tomorrow until 8am on Sunday and covers the East of England, South East, East Midlands and London.

Temperatures could hit 30C in the UK this week, but the warm weather also brings the risk of thunderstorms