HEAVY rain and gales of more than 100mph returned to Britain overnight - just days after the last storm caused Christmas misery for tens of thousands of people.

The Met Office issued yellow and amber weather warnings, indicating "severe or hazardous weather" with potential to "cause danger to life or widespread disruption" and urged many people to prepare for flooding.

The storm will spread east across the whole of the UK throughout the morning, with the worst-affected areas expected to be northern England and northern parts of Wales, the Met Office said.

Police and fire services up and down the country have already reported road closures because of uprooted trees.

Lara Gunn , a forecaster for MeteoGroup, said the latest weather system is pushing in from the west overnight resulting in widespread rain of up to an inch and forceful winds of up to 80mph along the coast and up to 60mph inland.

"Almost everywhere will be affected by the widespread gales and rain but it will clear throughout the morning," she said.

The storm is expected to cause fresh travel problems for airlines, train operators and bus companies as well as for drivers returning to work or home following the Christmas break.

Network Rail advises that routes will need to be checked at first light and tracks will need to be cleared of any fallen trees and any damage will need repaired before train services can start.

Southeastern said it is unlikely it will be able to run any metro or mainline train services until at least midday, while Network Rail added that services in Kent and Anglia will be delayed.

Robin Gisby, managing director of network operations at Network Rail, said: "Passengers have had a tough week of travelling and unfortunately that is likely to continue for at least another day.

"Thousands of railway workers have worked tirelessly over the holiday period to try and repair the significant damage caused by Monday's storm and will be called on again over the next 24 hours.

"As ever, safety comes first, as we ensure routes are safe for passengers services leading to a delayed start-up in some regions."

In a weather warning, Gatwick Airport said it had "additional teams of engineers, electrical staff and volunteers at the airport to minimise the risk of disruption from potential further flooding".

Flights at Gatwick were affected when chaos ensued on Christmas Eve after a power outage at the North Terminal, and the Civil Aviation Authority (CAA) said it expected the West Sussex airport's bosses to examine exactly what caused the mayhem before deciding what further action to take.

A spokeswoman for the airport said it was currently operating on schedule, and said wind speeds of 45 knots is expected overnight and this morning.

"We are telling passengers to check with their airline in advance," she said.

She described this week's weather as "unprecedented", and said it was the combination of gales and heavy rain that caused the problems.