A cold snap will continue to spread across Britain on Tuesday and temperatures could plunge as low as -10C in parts of the country.
The Met Office has issued a yellow warning of snow and ice for much of England and Wales and parts of Scotland after a day of heavy snowfall in some regions, with more wintry weather expected on Wednesday and Thursday.
It said that overnight temperatures into Tuesday "will tumble towards freezing, perhaps getting as low as -10 degrees C in western Scotland where there is a covering of snow".
Drivers were urged to stay off the roads with treacherous conditions predicted by the AA if thawing snow turns to ice overnight.
Britons could also wake up to freezing fog patches, which will be slow to clear.
Wintry showers could see up to 10cm of snow fall over the Pennines and North York Moors, according to the weather warning which runs until 10am on Tuesday.
The Met Office said that most places will see little or no snow, but "a slight covering of a centimetre or so is possible in a few places".

Ben Sheridan, of the AA, said: "Thawing snow, rainfalls and freezing temperatures overnight lead to challenging driving conditions, with roads likely to be icy in the morning."
But the AA added regional restrictions, which have been imposed due to Covid-19, mean that roads are quieter than normal.
Large swathes of London, the Midlands, the South, South West plus the east of England and Wales have also been warned that snow and ice could hit on Wednesday and Thursday.
The Met Office yellow warning suggests that up to 5cm of snow could fall across parts of southern Wales, central and southern England, and there is a small chance of 10cm-15cm settling in a few places, most likely on high ground above 200 metres.
It comes after much of England and Wales endured a cold and frosty Bank Holiday Monday.
UK 5 day weather forecast
Today:
Many parts dry inland with sunny spells but feeling cold. Wintry showers affecting most coasts, whilst early band of rain, sleet and snow moves south across England and Wales and decays.
Tonight:
Wintry showers affecting in north and west with further snow in far north. Most inland areas dry with clear spells and a widespread frost. Ice and freezing fog patches likely.
Wednesday:
Cold with sunny spells with scattered showers around coasts in Scotland and Northern Ireland. Rain, sleet and snow moving eastwards across southern UK with risk of snow to low levels.
Outlook for Thursday to Saturday:
Area of rain, sleet and snow clearing from the southeast on Thursday. Further wintry showers feeding inland from northern and eastern coasts with overnight frost and patchy ice. Remaining cold.