A lorry driver has died after his vehicle left a trunk road in severe wintry conditions.
The incident on the A160 in north Lincolnshire happened as police across the north of England and Scotland warned motorists to take extra care due to sleet and snow.
Humberside Police said the white Scania lorry, which was fully loaded with meat, left the westbound carriageway of the road in South Killingholme at about 4.14am.
A spokeswoman said road conditions in the area were quite poor at the time due to cold weather and hailstones. The driver has not been named but is believed to be from the North West. He was pronounced dead at the scene.
The Met Office has issued severe weather warnings for most of Scotland as well as Northern Ireland and parts of northern England. They warn of sleet and snow showers and ice on untreated surfaces.
On Sunday, Transport Scotland activated a full Multi-Agency Response Team (MART) involving all of its transport partners including rail, road and Strathclyde Police.
Tayside Police dealt with several accidents in the Perth and Kinross area where cars left the road due to icy conditions, while a number of routes in northern Scotland were affected by snow and ice.
Northern Constabulary reported a loss of 999 call service in the Rosehall area of Lairg in Sutherland, affecting 176 telephone lines. It was thought to be due to the weather conditions.
Assistant Chief Constable Allan Moffat, of Central Scotland Police and the Association of Chief Police Officers (Scotland), said: "I would ask people to remember that both damp and snow-affected roads can hide the hidden danger of black ice, particularly in shaded areas. Our message is very much aimed at asking motorists to be aware of the dangers and travel with extra caution."
Andy Ratcliffe, a forecaster with MeteoGroup, the weather forecasting arm of the Press Association, said: "We will see more wintry showers with more snow over high ground in western areas. Northern England will see wintry showers but it will not be as badly affected as Scotland."