Thick fog is causing problems for air passengers and drivers in England, particularly in southern areas.
Thick fog is causing problems for air passengers and drivers in England, particularly in southern areas.
At Heathrow and Gatwick airports more than 50 flights have been cancelled, and there is poor visibility on roads.
At Heathrow and Gatwick airports more than 50 flights have been cancelled, and there is poor visibility on roads.
Fog has affected a large stretch of the M1 motorway between junctions 19 and 21, and in Manchester part of the M62 and all of the M60 are covered by fog.
Fog has affected a large stretch of the M1 motorway between junctions 19 and 21, and in Manchester part of the M62 and all of the M60 are covered by fog.
The BBC Weather Centre says the fog will be patchy, but in some areas visibility will be down to 50m (164ft).
The BBC Weather Centre says the fog will be patchy, but in some areas visibility will be down to 50m (164ft).
Road collisions
Road collisions
However, forecasters expect it to clear later - giving way to milder, wetter weather - and say rain is likely across the UK on Christmas Eve.
However, forecasters expect it to clear later - giving way to milder, wetter weather - and say rain is likely across the UK on Christmas Eve.
Elsewhere on the roads, parts of the M6 are also suffering from poor visibility, including junction 3 which also has a build-up of ice.
Elsewhere on the roads, parts of the M6 are also suffering from poor visibility, including junction 3 which also has a build-up of ice.
Problems in Kent include fog on the M2, M20 and M25. There is also fog between junction 11 and 14 of the M5.
Problems in Kent include fog on the M2, M20 and M25. There is also fog between junction 11 and 14 of the M5.
Motorists travelling from Sussex into Surrey on the northbound stretch of the M23 faced disruption following two accidents - one south of Gatwick Airport and another south of the junction for the M25, near Redhill.
Motorists travelling from Sussex into Surrey on the northbound stretch of the M23 faced disruption following two accidents - one south of Gatwick Airport and another south of the junction for the M25, near Redhill.
Meanwhile in Northamptonshire, two crashes - one on the A14 at the junction with the M1 and another at the A421 at Evenley near Brackley - also caused long delays.
Meanwhile in Northamptonshire, two crashes - one on the A14 at the junction with the M1 and another at the A421 at Evenley near Brackley - also caused long delays.
Cancelled flights
Cancelled flights
A total of 45 flights have been cancelled from Heathrow - 20 are British Airways short-haul flights and 14 are short haul flights to European destinations with other airlines.
A total of 45 flights have been cancelled from Heathrow - 20 are British Airways short-haul flights and 14 are short-haul flights to European destinations with other airlines.
A further 10 BA and five Easyjet flights have been cancelled at Gatwick.
A further 10 BA and five Easyjet flights have been cancelled at Gatwick.
A spokesman for Heathrow said that 181,000 passengers were expected in Heathrow's terminals on Sunday, slightly fewer than Saturday when 214,000 passed through.
A spokesman for Heathrow said that 181,000 passengers were expected in Heathrow's terminals on Sunday, slightly fewer than Saturday when 214,000 passed through.
Passengers are being advised to check with their airline for further information.
Passengers are being advised to check with their airline for further information.
Stansted and Southampton airports are operating a normal service.
Stansted and Southampton airports are operating a normal service.
Rail travellers could yet face problems over the festive period because the West Coast Mainline is closing for five days from 27 December.
Rail travellers could yet face problems over the festive period because the West Coast Mainline is closing for five days from 27 December.
And on the roads, the busiest days after Friday's mass getaway are expected to be 27 and 28 December.
And on the roads, the busiest days after Friday's mass getaway are expected to be 27 and 28 December.
Have your travel plans been affected by the weather? Send us your comments by filling out the form below
Have your travel plans been affected by the weather? Send us your comments by filling out the form below
