Parts of Britain woke up to a blanket of snow on Tuesday morning, as temperatures reached a spine-chilling -11C (12.2F).
Weather warnings for snow and ice remain in place for much of the UK, with commuters warned of icy conditions.
While some snow fell in London overnight, the coldest weather was reserved for areas which saw less snow and clearer skies.
The village of Dalwhinnie in the Highlands endured -11C, and it was just a few degrees warmer in Katesbridge Co Down where the mercury plummeted to -8C (17.6F).
The snow is unlikely to fall in great volumes or lie, said Met Office forecaster Kirk Waite, but he added the cold weather could bring about tricky driving conditions.
"We are not really expecting much in the way of accumulation as it will be mostly a light snowfall," he said. "But the cold weather will create some potentially difficult travel conditions through rush hour with a risk of icy patches."
Later today it will struggle to get above 6C (42.8F) in parts of England, including London, Mr Waite added.