Severe snow warnings remain in place for east and south-east England, the East Midlands and Yorkshire and Humber.
The Met Office later issued a severe snow and ice warning for Grampian, the Highlands, Orkney and Shetland, Angus, East Lothian and the Borders.
Some real world advice from a continental climate about driving in severe cold and snow conditions.
Many drivers were stuck overnight on the M8 after heavy snow caused severe disruption to the route that links Glasgow with Edinburgh.
People living in Lochaber are being encouraged to plan for severe weather events as snow and ice disrupts power and travel in many parts of Scotland.
The Met Office has issued a severe weather warning for heavy snow across the west country on Friday.
Adam and Glenda Budworth were walking home to St Brelade along the Railway Walk in heavy snow, blizzards and severe gales.
Heathrow airport has tripled the number of snow clearance vehicles to tackle severe winter weather.
The Met Office said a yellow warning for severe weather remained in place but the snow would ease off throughout the day.
"We expect snow and then rain, and severe coastal flooding, " said CNN meteorologist Sarah Dillingham.
He said that while the road and rail networks had recovered quickly from heavy snow, Heathrow Airport had experienced severe disruption.
He said the red snow warning remained in place with severe gale force winds and blizzard conditions expected to continue throughout the day and overnight, with only a slow improvement expected on Tuesday.
Local councillor Wyn Evans told the BBC melting snow and torrential rain had caused "severe flooding and destruction" in the area.
BBC: Flood fears as snow turns to rain and temperatures rise
Heavy snow in north-western Europe is causing severe travel disruption, including the cancellation of hundreds of flights via Frankfurt and Paris.
In Worcestershire, there is also severe disruption and the council said it was sending out snow ploughs instead of gritting the roads.
After the severe weather, a cold-weather system could bring snow and freezing rain to the Midwest, beginning Wednesday, and the threat of extremely cold weather in the northern Plains states and Upper Midwest, particularly on Thursday.
The UK is in the grip of its longest cold snap for almost 30 years, and extreme or severe weather warnings are still in place across the UK for both snow and ice.
The Met Office has issued a severe weather warning for South East England for Friday, warning of snow throughout the region - including much of East and West Sussex - and a danger of some drifting.
The west London airport came under severe criticism in the winter of 2010 over its failure to cope with snow after it was shut for days.
For the Highlands and Grampian, as well as Tayside and Central, forecasters said ground above 250 metres would see fresh accumulations of snow, possibly 5cm to 10cm over higher parts, with severe drifting in the northerly gales.
He said that independent advisers had said there was no need to prepare for regular long periods of heavy snow fall in the future, but conceded there may still be severe events.
Heavy snow is falling in Wales, where a rare Met Office red warning for severe disruption has been issued.
But Chris Williamson from Markit said that while the snow had clearly had an impact on sales, the decline was not as severe as that seen in previous years.
Severe weather warnings are in force across the UK, with eight inches (20cm) of snow forecast in places.
Snow gates have been installed on a trans-Pennine road, to improve safety during severe weather.
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