Traffic is being held after a crash involving two vehicles on the M25 clockwise between Junction 3 M20 (Swanley interchange) and Junction 2 A2 (Darenth interchange).
Congestion on the motorway continues as far back as the Dartford Tunnel.
Traffic has been stopped for the crash in lane four of the four lanes.
It comes after a three car collision also c caused significant delays for traffic on the M25 on the entry slip road to the anticlockwise carriageway at junction 13 near Staines.
One lane was closed on the slip road for around two hours while emergency services cleared the incident.
There have been no reports as of writing about any casualties.
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