There are two hour delays and 15 mile tailbacks after a vehicle overturned on the M25. The motorway is affected between Junctions 8 and 11 clockwise.
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Icy patches remain on unsalted roads and police warn drivers they face on the spot fines if they don't clear snow from their cars.
Holly has the latest forecast for the east of the region.
Holly has the latest weather forecast for the west of the region.