The latest blast of freezing temperatures and snow showers will give way to much milder weather this week, forecasters said.
Britain's break from the sub-zero conditions will be a welcome respite, with the mercury even reaching as high as 13C (55F) by Wednesday. The milder air is due to arrive by the middle of the week after snow showers across the Pennines and Scotland clear.
Tom Tobler, forecaster with PA's weather division MeteoGroup, said Monday would be a bit warmer but wet and windy.
Temperatures across the country then dip into low single figures on Tuesday before the much milder conditions arrive on Wednesday.
Mr Tobler said: "There will be a repeat performance of heavy rain coming in from the west, with snow over northern areas and then that's bringing milder air so Wednesday could reach 12-13C across a fair bit of England. It will stay cold in the north but it will be milder than it has been."
The mercury will top 13C in the South West on Wednesday, with even parts of northern England reaching double figures. It will be a similar story on Thursday.
On Sunday, heavy snow showers fell across Scotland where temperatures dropped as low as minus 10C (14F) causing a heavy frost.
Freezing weather also caused treacherous conditions further south.
Cambridgeshire Police said it had reports of 30 road accidents between 6am and 10.30am - around five times more than normal. Inspector Jamie Rice of Cambridgeshire Police said: "Officers have... been dealing with an extraordinarily high number of road traffic collisions, which has tested the resource levels of all emergency services to the limit."
The AA had a busy day, expecting 12,000 calls to breakdowns by the end of the day compared with just 7,500 on a normal Sunday.