The M25 anticlockwise is blocked with stationary traffic and long delays between J30 A13 (Lakeside / Tilbury) and J29 A127 (Romford), congestion to J1a A282 / A206 Crossways Boulevard / B3228 (Swanscombe).
A second air ambulance is attending the accident on the clockwise side and there are long delays whilst all traffic is held anticlockwise.
More top news
Grey and misty to start the day. A few showers lingering for a time. Becoming drier later, with the chance of a few sunny spells
Four drunken teenagers beat a man to death in a savage attack in a Peterborough underpass before going on to a party, a court heard.
A pensioner from Essex says she feels trapped in her own home because the lane leading to her house is ridden with potholes.