Severe weather warnings continue
Widespread disruption caused by heavy snowfall in England and Wales looks set to continue on Friday.
The BBC Weather Centre has warned of hidden black ice on roads, while many schools will remain shut.
At least one person died in a major crash on the M27 in Hampshire on Thursday evening, although it was not clear if the weather was the cause.
Rail companies hope to run normal services on Friday, although points could freeze leading to morning delays.
Airports are also expected to return to normal, but travellers are being warned to take extra time because of a possible backlog.
Black IceSevere overnight weather warnings have been issued for Wales, the Midlands and southern England.
Temperatures could fall to -4C (25F) in Wales and the Midlands. Elsewhere, in south-east England and western Scotland, it will be -3C (26F).
And in north-west England, north-east Scotland and Northern Ireland the temperature is set to drop to -2C (28F).
The BBC's Sally Nugent said snow would be dying away across the country on Friday, apart from some light snow showers in northern and north-west England.
But plunging temperatures meant surface water on roads would freeze, leading to black ice in may parts of the country.
"The danger is you can't see it," she said.
"Drive very slowly even if you think the roads look clear and keep plenty of distance between yourself and the car in front of you."
People should "take extra time and be extra patient" when using all modes of transport on Friday, she said.
More snow has been predicted for Saturday in central and northern England, as well as some parts of Scotland, and there may be further snowfall in Scotland on Sunday.
The deepest snow recorded on Thursday was at Sennybridge, in the Brecon Beacons, which had 10cm (4in).
Motorists, air and rail passengers faced delays, and Commons Leader Jack Straw admitted that Britain could cope better with this type of weather.
More than 2,000 schools across the south-east of England, the Midlands and Wales were closed. Many will remain closed on Friday.
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