An accident at the Dartford Tunnel is causing chaos on the M25.

Traffic is queuing as far as junction two for the A2 at the Darenth Interchange.

The accident which happened at 6.40am is believed to have involved a vehicle and some traffic cones.

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A spokesman for Highways England said: "There is heavy traffic due to earlier accident on M25 anticlockwise at the Dartford Tunnel.

"After a brief stoppage at 6.40am, when a vehicle knocked over a few of the traffic cones."