Britain could see its heaviest snowfall tonight for more than five years.
The Met office is classing the flurries as an extreme weather event, warning that it will cover the south east of England including London.
Head of Forecasting Operations at MetService, Tom Defty said: 'This is likely to be the heaviest and most widespread snowfall across England since January 2003.
'Parts of South-East England, including London and Eastern England will see anywhere from 10-15cm, perhaps above 20cm over the higher ground.'
Kent is expected to be worse hit and severe disruptions to the roads and airports is expected during rush hour on Monday morning.
'Further outbreaks of snow are expected throughout this week, especially across Wales, Northern England and Scotland,' he added.
Wintry weather moving in from the east will bring freezing temperatures, biting winds and snow to the eastern half of the UK.
The treacherous conditions and snowdrifts of more than three metres high crippled parts of the road and rail network network and affected the economy as takings were down as people struggled to get to the shops.
MeteoGroup said temperatures barely got above freezing today, with icy winds making it feel even colder.
Up to 15cm of snow could fall in the Pennines with Lincolnshire and Yorkshire also likely to be badly affected.
The winds, which will generally be around 25-30mph, could get close to gale force in some places tonight, according to forecasts.
The spokesman explained: 'Monday will be a very cold day across the UK with frequent snow showers for many areas.
'Some of the showers will be heavy, leading to some accumulations, particularly over the North Yorkshire Moors and the Pennines.'

The weather was so cold in early January that it froze the sea at Poole