Hundreds of cars have been stuck in the snow after a lorry has blocked a major road.
Drivers have been facing whiteout conditions as cops closed the road, the Telegraph & Argus reports.
Two cars and two lorries have blocked traffic from moving on the A171 Birk Brow Guisborough in Whitby Road, North Yorkshire.
Police have warned people to to travel unless absolutely necessary.
The A12 has also been closed both ways between junction 11 and 15.
A Essex police led incident is being carried out, who have confirmed the road will romain closed throughout the evening.
Long delays of up to 60 minutes are estimated, with around four miles of congestion back to the M25 junction 28 roundabout.
A diversion route has been put in place by exiting the A12 at either junction 12 Marylands northbound, or junction 15 at the roundabout southbound.
Another lorry broke down in Surrey causing traffic to be held.
All lanes have now reopened on the M25 although delays remain.
The National Highways said: “The broken down lorry has now left the carriageway.”
Congestion has still built up on the motorway anti-clockwise between junction 8 Reigate and junction 17 on the M23 in Redhill.
Drivers can expect delays of around 45 minutes as six miles of congestion has backed up almost to Leatherhead junction 9.
Road cops were reported at the scene with Traffic Officers.
Tough road conditions have come as a cold snap blanketed Britain and up to 25cm (10ins) of snow fell today.
The Met Office put in place Yellow weather warnings for snow and ice across the UK.
Locals in County Durham and Yorkshire could be seen trudging through deep snow drifts and de-frosting their cars.
Meanwhile, houses in North Yorkshire were topped with the white stuff as temperatures dipped overnight.
Residents in Northumberland also woke to see blankets of snow covering rural countryside.
With the mercury expected to fall to an icy -12C a cold weather health warning has been issued alongside snow and ice warnings.
Commuters across the UK battled snowfall on the roads and railways on their way to work – with the Met Office warning the cold “could create some particularly tricky travel conditions.”
An amber alert was also issued for parts of Yorkshire and the North East, where the thickest blankets of snow could fall.
