The Met Office has issued a new freezing fog warning as plunging temperatures threaten to cause further travel chaos for drivers and commuters.
Forecasters say fog and freezing fog will “persist and become more widespread” across a swathe of England from Monday evening and into Tuesday morning.
A yellow warning has been issued for a large area that stretches from Lincolnshire down through to Devon and includes London.
Drivers have been told to slow down and expect “difficult” conditions on the roads and “disruption” including delays.
For those still flying domestically or abroad during the Covid-19 pandemic, there is a chance of delays or cancellations to flights
The warning will be in effect from 4pm on Monday to 11am on Tuesday.
The warning area and times could change.
Fog has posed a problem for drivers in recent days, including Monday morning when an earlier warning was in effect, and some places have seen their first snowfall of the season as temperatures plunged to as low as -10C in the UK.
Parts of the country have been colder than Finland.
The Met Office said: “Fog and freezing fog will persist and become more widespread Monday evening, lasting into Tuesday morning.
“The visibility is likely to be less than 100 metres (490 feet) in places leading to difficult driving conditions and some disruption to transport.
“The odd icy stretch is also possible.”
It said journey times could be slower and there could be delays to bus and train services.
Monday was another chilly day across the UK but it is expected to become a little milder later in the week.
Heavy rain and gales are expected to batter Scotland from Monday night, bringing a risk of flooding and travel disruption.
A rain warning is in place between 6pm on Monday and 9pm on Tuesday.
The Met Office wrote on its website: “An area of persistent and heavy rain will spread in from the east on Monday evening, lasting much of the night before turning showery on Tuesday.
“20-30mm will fall quite widely across the area with some hilly areas possibly catching 40-50mm.
“Further showers through the day could bring another 10-15mm in places.
Watch the AA’s tips for driving on ice and snow
“With the ground already saturated this is likely to lead to flooding in a few areas.”
UK five-day weather forecast
Some coastal showers, else most parts dry.
Some sunny spells, but freezing fog patches slow to clear, and persisting in places.
Turning wet and windy over northern and eastern Scotland later.
Rain across Scotland moving south-westwards, heavy and persistent on high ground with gales around coasts.
Some coastal showers elsewhere, whilst frost and fog develop inland, especially in the south.
Rain across Scotland moving south into Northern Ireland and northern England.
Some showers for Wales and south-west England.
Mostly dry across southern England but cold, with fog slow to clear.
Wednesday to Friday
Fine and dry for many on Wednesday before outbreaks of rain gradually edge in from the west on Thursday and again on Friday.
Gradually becoming a little milder.