It could be the coldest winter since 1963, with temperatures forecast to plummet to minus 23C.
There are warnings of severe weather across 10 regions this weekend and the cold spell could last until mid-February.
It follows last winter's severe weather, which brought the country grinding to a halt.
Is this the beginning of the kind of extreme weather we've been told to expect as the climate changes thanks to man-made greenhouse gases? Or is it just the notoriously unreliable British weather? Here, two of the country's leading weather experts give their views.
YES - By Dr Liz Bentley, of the Royal Meteorological Society and founder of The Weather Club
What's happening to the weather? Last winter was the coldest since 1978/79 and looking at the current spell, we could be in for another one.
It may seem contradictory to link this with global warming, but there is growing evidence to show that we can expect a temporary period of colder winters as the climate warms.
Source Link: mirror.co.uk