An ice blast could cause phone signal to cut out across the country, with a severe weather warning forecasting snow and storms in the coming days.
Mobile reception could be lost across the UK if expected icy winds dry air moisture onto power cables and cause them to break.
Issuing two yellow weather warnings for snow and ice, the Met Office forecast potential power cuts and said mobile phones could be affected.
Conditions are expected to bring travel chaos and this afternoon a car was pictured having careered off an icy road in Scotland when it spun 180 degrees.
Snow covered rooftops in Overwater, Cumbria, this morning as more snow falls across the north of England and forecasters warn of potential mobile phone signal loss
It comes after a lost walker with badly frozen feet was rescued in blizzard conditions in a nine-hour operation in the Cairngorms this morning.
Cairngorm Mountain Rescue Team found the man with hypothermia in the Munro mountains. The foreign national was stranded in a blizzard 3,000 feet up Carn Ban Mor. The 56-year-old was taken to be warmed up at the rescue base and required no further treatment.
Another two walkers were saved by mountain rescuers on a Snowdon ridge after they were stranded by snow and ice today.
Six Llanberis mountain rescue team members were airlifted up the peak by a coastguard helicopter and roped the men to the 3,560ft summit. They were then escorted down a path.
The Met Office has said a cold air mass will bring snow showers across the country this week, with East Anglia and London being most affected tonight. In the capital temperatures could plummet as low as -5C and -2C elsewhere.