Two lanes are closed and there are long delays due to a fuel spillage and an accident involving two lorries and a car on the M4 westbound between J17 A350 / A429 / B4122 (Chippenham) and J18 A46 (Bath/Tormarton).
Lanes one and two (of three) were closed around 2:45am after a lorry collided with the nearside barrier.
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A frosty start in the east will clear to a pleasant winter's day for all - clear skies, sunny spells, staying dry but rather cold
Cloud will keep much of Cornwall and South Devon frost free tonight but there's no denying that it will be cold tomorrow, if sunny.
Temperatures will dip well freezing tonight. Friday will have a frosty start but we can count on lots of sunshine.