Further storms set to sweep UK

The Met Office is warning that the risk of extremely heavy rain, thunder and lightning is greatest in the central and eastern parts of England on Friday, where up to 100mm could fall in a short period.

Other areas at risk include the South West and eastern parts of Wales, where there could be up to 50mm of rain.

Because such deluges could cause dangerous driving conditions at the start of the first major summer getaway for families, the Met Office is working closely with the Highways Agency and Environment Agency to help warn motorists and residents about the potential for flooding.

Keith Groves, head of forecasting at the Met Office, said: "We are talking about a major rainfall event. When you get such heavy rainfall in such a short time then there is a greater risk of flooding.

"Areas such as Birmingham, the M5/M4 corridor and the Cotswolds are at the greatest risk of the most rain, but anywhere in England and Wales could see torrential downpours at some stage on Friday and people should keep an eye on our forecasts."

Road users in the West Midlands particularly are advised that heavy rain could affect their journeys during Friday morning's peak travel period.

The Highways Agency warned rain and spray can reduce visibility and more than double the distance it takes to stop.

Drivers are advised to check the Met Office weather forecast and their routes for delays before they travel, and to listen for bulletins on the radio while they are on the road.

Meanwhile, Tory leader David Cameron is to visit an area of Lincoln tomorrow afternoon to see the damage caused by the recent floods. Mr Cameron will meet residents affected by flooding and those involved in the clean-up operation.