A month's worth of rain is set to fall in a day on parts of south and east England, causing flash flooding, the Met Office warned.

The weather service has issued a yellow warning for rain in the south east, and said that some areas could experience several weeks' worth in a matter of hours.

A spokesman said: "There's a warning over parts of the south and east of England of reasonably high rainfall totals.

"Some areas will see 60 to 80mm through the whole day, and 20 to 30mm within two to three hours.

"That has the potential to cause flash flooding."

The warning, which is in place until midnight, covers all of London as well as Oxford, Southampton, Norwich and Essex.

Earlier flash flooding in a number of towns and villages in East Yorkshire and North East Lincolnshire included scenes of 3ft (1m) deep standing water in parts of Withernsea and numerous incidents across the Grimsby and Immingham areas.

Humberside Fire and Rescue Service said it responded to numerous calls on Tuesday evening from the Bridlington area down to Hull and towns south of the Humber.