Motorists have been tackling hazardous driving conditions after heavy snowfalls hit parts of Britain, the worst-affected areas being Scotland and northern England.
MeteoGroup, the weather division of the Press Association, said the freeze was caused by rain moving in from the west turning to snow as it met colder air.
A severe weather warning was issued for Yorkshire and the Humber as heavy snowfall caused disruption across the region.
Drivers were being warned of hazardous driving conditions on the M62 at Rishworth Moor in West Yorkshire. Heavy snowfall caused problems on the Woodhead and Snake Pass transpennine routes.
Snow was also falling in parts of South, North and East Yorkshire. A spokeswoman for North Yorkshire Police said "there are accidents all over the place" as the icy conditions caused vehicles to skid off the road.
Temperatures are now set to rise slightly, and only the hills of northern England and eastern Scotland will see much snow remaining on the ground.
Forecaster Rachel Vince said: "As this rain moves in it is bringing in some milder air. In most places it will have turned to rain during the morning. Once the rain clears away eastwards it's going to be a windy mix of sunshine and showers."
Over the next week or so, temperatures are forecast to be about average for December (4-7C in the daytime) with some unsettled showery weather before a drier weekend.
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