The Met Office issued the warning which is in force until this evening.
What to expect
Possible travel delays on roads stranding some vehicles and passengers, especially across higher routes, with potential for road closures.
Possible delays or cancellations to rail and air travel
Power cuts may occur and other services, such as mobile phone coverage, may be affected
Untreated pavements and cycle paths might be dangerous or even impassable, posing a greater risk of injuries and accidents.
Warning below is in force until 9 pm on Thursday 14 January.
Snow, already falling across parts of Scotland, will produce a further few centimetres before becoming lighter and less widespread during the afternoon. Across northern England, a further 2-5 cm snow is likely in places, with perhaps 5-10 cm above 200 metres across the Pennines and Peak District.
Rain will also turn to sleet and snow further south, affecting parts of central England today. Amounts of settling snow at low levels are less certain here, but 1-3 cm is likely in some places, with up so 5 cm above 200 metres. Sleet and snow will slowly die out on Thursday evening with ice forming on untreated surfaces.
