Where thundery showers do fall, they will bring frequent lightning, gusty winds and potentially some large hail, as well as brief spells of heavy rain, the forecaster said. It has warned that 15-25 mm of rain fall may fall in an hour, with a very small chance of 30-40 mm falling in three hours.

The Met Office has issued a yellow weather warning for thunderstorms covering a large area of southern England and Wales. The weather warning will last from 12pm until 8pm on Friday, before another takes its place from 1am until 11:59pm on Saturday.

Thunderstorms and heavy rain are set to batter the UK from tomorrow with the Met Office issuing two yellow weather warnings - one for Friday and one for Saturday - covering large parts of the UK. Forecasters have warned affected areas could see disruption to public transport,