Queueing traffic due to earlier broken down vehicle on M25 anticlockwise at A282 (Dartford River Crossing toll booths), congestion to J2 A2 (Darenth Interchange). The West bore was closed to clear the broken down lorry. All lanes reopened just after 08:05.
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Russia has announced that it will expel 23 UK diplomats in a deepening rift over the poisoning of a Russian ex-spy and his daughter.
Scores of flights were cancelled and drivers were warned to take care as the "mini beast from the east" swept in.
Sergei Skripal, the ex-Russian spy who was the target of the attack, and his daughter Yulia, remain in a critical but stable condition.