A yellow weather warning for thunderstorms has been issued for the south east of England overnight on Tuesday and into Wednesday.

As the heatwave the UK has been enjoying for several weeks comes to an end and temperatures are predicted to drop, heavy rainfall is also heading our way, according to the Met Office.

The warning says frequent lightning is to be expected, with 20-30mm of rain potentially falling in just an hour.

Flights are being disrupted as a result of the forecast, with Ryanair cancelling at least 14 departures and 13 arrivals at Stanstead Airport.

Frank Saunders, chief meteorologist at the Met Office, said: "After weeks of predominantly high temperatures and very little rainfall for many parts of the country, high pressure is finally breaking down allowing a cold front to introduce cooler, fresher air from the Atlantic to all parts of the UK.

"Temperatures will still often be in the low to mid-20s Celsius in eastern parts of England for the rest of this week, which although is above average for the time of year, will be notably cooler than recent weeks."

The warning comes as predictions suggest the UK could head from a scorching hot summer into a balmy autumn, with "warmer than average temperatures."