Extreme weather left drivers stranded and more roads impassable overnight - with another day of sub-zero temperatures, icy blasts and 'blizzard-like' conditions on today.
Storm Emma, rolling in from the Atlantic, looks poised to meet the Beast from the East's chilly Russia air - causing further widespread snowfall and bitter temperatures.
As winds picked up overnight, drifting snow caused misery for many motorists - with some parts recording accumulations up to a foot deep.
Buses to Edinburgh Airport stand at a bus stop in the Scottish capital this morning as parts of Britain are hit by severe weatheriPhone transfer software
Chris Wright posted this picture last night of him stranded with two children aged two and six months at Glasgow Airport
Major Scottish airports saw many flights cancelled, including Glasgow which halted all routes until 3pm today. British Red Cross emergency response volunteers were at the airport supplying bedding for up to 100 people.
Chris Wright from Edinburgh posted a picture last night of him stranded with two young children aged two and six months at Glasgow Airport.
He tweeted: 'No help, no hotels/accommodation, no place to sterilise bottles, Emirates have been an absolute disgrace. We are so disappointed with their service.
'Other airlines (are) putting up their customers and providing them with further information, providing them with an allowance for food - and all we get is "you cannot be compensated as it is not our fault".
'Such a poor service! Only after pushing and pushing we received some blankets from the Red Cross, over eight hours later!'
In Lincolnshire, police said the A52 had become impassable between Boston and Skegness, and warned that officers would not be able to rescue stuck drivers. Not even a snowplough could get through, the fire service said.
Lincolnshire Police have warned people that 'most roads' in the county are impassable, and urged people not to make journeys 'unless absolutely necessary'.
The force's control room tweeted that the weather was especially bad in rural areas, adding: 'We are receiving reports that remote villages are totally cut off under 2ft of snow.'
There was also misery for drivers in Scotland - where the highest level of weather warning, a red alert, remains in place until 10am today.
Motorists on the M80 near Glasgow reported being stuck for up to 13 hours, with some spending the night in their cars, and others abandoning their vehicles on the motorway. Some described it as having become a 'car park'.
Driver Stevie Buist abandoned his car at Castlecary, Lanarkshire, and walked on the hard shoulder with his children Lucy, five, and Logan, nine, along with their dog.
He told STV: 'We got on the motorway at 2pm and at about 5.30pm I decided to leave the car as I was low on diesel and mobile phone battery.'
He added: 'I thought I would take my chances while it was light outside... Temperatures were dropping and it was already -3C so I couldn't make them sleep in the car.'
Dylan Robertson tweeted: 'After a 3 hour long failed attempt to drive to Stirling from Glasgow I can now confirm the M80 is at a standstill.'
Martin Braithwaite posted: 'Haven't moved in 2 hours and in the last 15mins the snow has come and devoured the asphalt.'
As the M80 ground to a halt, Traffic Scotland urged stuck motorists to stay in their vehicles, tweeting that police had deployed the Rapid Relief Team to 'provide welfare to drivers and passengers'. A jackknifed lorry also brought the M80 to a standstill earlier in the day.
Drivers reported tailbacks on most motorways, including a 12-mile queue on the M74 outside Glasgow – shops, cafes and restaurants had to close because of a lack of staff and supplies.
The A66 in the North East was shut between Scotch Corner and Brough, while the A628 was closed in South Yorkshire and Derbyshire between Flouch and Tintwistle due to snow and stranded vehicles.
Highways England said the A56 in Lancashire would be shut between the M65 and A680 for 'several hours' to recover a crashed lorry and clear the snow.
Temperatures plunged to a widespread low of between -6C (21F) and -4C (25F) overnight, and forecasters have warned it could feel as chilly as -11C (52F) during the day as the winds continue to strengthen.
Gusts of up to 60mph could also bring 'blizzard-like conditions'.
Scottish Borders Council said snowploughs had