Transport services have been hit by the snowfall overnight, with disruption on the roads, to flights and to trains.
Here are the latest reported issues:
Highways England has warned of hazardous driving conditions across much of the UK as snow began to settle overnight.
The A249 in Kent has been shut due to a crash, between junction 7 for the M20 and junction 5 for the M2, while the A1231 in the North East was blocked by an overturned lorry near the A182.
North Yorkshire Police said snow and ice was affecting most of the roads in the area, with roads around Harrogate and Craven particularly treacherous.
The A19 in North Yorkshire was closed after a crash.
North West Motorway Police reported that some lanes on motorways in the area were blocked due to the snow.
According to Network Rail, several train companies are reporting cancellations and alterations to services on Tuesday.
Southeastern, which operates in Kent, has cancelled dozens of trains, including several to London St Pancras, London Victoria and Cannon Street.
Greater Anglia will also be running a limited service, with less frequent and slower services between Norwich and Ipswich and cities such as London and Cambridge, and no trains between Norwich and Lowestoft, Felixstowe and Great Yarmouth, among others.
Great Northern said fewer trains will be running between Kings Lynn and Cambridge during the morning peak, with services running hourly instead of half-hourly. Services between Kings Cross and Ely have been cancelled.
Southern will be running an hourly train service on the London Bridge to Uckfield line, with additional coaches, and a shuttle service between Redhill and Tonbridge.
TfL Rail will not start its trains until 7am on Tuesday, and only a limited service of six trains per hour will be in operation between London Liverpool Street and Shenfield, while c2c is also operating a limited timetable.
British Airways has cancelled dozens of flights from Heathrow Airport on Tuesday, while easyJet said it is expecting disruption to some of its flights and has advised customers to check before they travel.
East Midlands Airport said it was currently fully operational, but warned passengers to monitor updates throughout the day.