Heavy snow has blanketed the east and south-east of England, with forecasters warning of further showers overnight.
The Met Office said it was “bitterly cold” due to strong easterly winds and temperatures in parts of the UK would continue to remain around freezing.
An amber warning – meaning travel disruption and power cuts are likely – is in force until midday on Monday.
And less severe yellow warnings have been issued for much of England, Scotland and Northern Ireland.
Some 14cm (5.5in) of snow was recorded at Manston, Kent, on Sunday evening, BBC Weather forecasters said.
The cold snap promptedthe closure of Covid vaccination centres in Essex and Suffolk on Sunday.
And Southeastern Rail strongly advised passengers not to attempt to travel on its network on Sunday or Monday.
But the severe conditions are not expected to be as widespread as 2018’s Beast from the East, forecasters say.
BBC Weather forecaster Billy Payne said the cold weather would last until at least the middle of the week.
Temperatures would be below freezing during the day in some areas alongside a “severe wind chill,” he said.
“It qualifies as a Beast from the East in my view – although it’s not ‘Beast from the East Two’ since we’ve had a number of cold easterly spells over the years.”