A multi-vehicle crash on the M25 is causing rush-hour chaos.

One of the cars has overturned and is blocking a lane on the A282 anticlockwise between junctions 1a and 1b near Dartford and Gravesend near the Darent Interchange.

Emergency services and National Highways are at the scene.

A Kent Police spokeswoman said: "We were called to a report of a three-vehicle collision on the A282 in Dartford just before the tunnel at around 7.25am. Emergency services are at the scene. One person has reported injuries."

The incident happened at 7.30am.

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There are long delays on A282/M25 anticlockwise approach and queues back towards M25 J3 at the Swanley turn-off.

A spokesman for National Highways warned: "Approach with caution and allow extra time for your journey."

There are also knock-on delays with slow moving traffic on the A2 London-bound between M2 J1 and B255 Bean Lane.