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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