An ambulance is on scene following a broken down car on the M25 clockwise between junction five and junction six.
Traffic has been at a standstill near the Clacket Lane services for over an hour.
It is not yet known why an ambulance is on scene. Reports suggest the reason for the hold up is a broken down car.
Lane one of four remains closed.
There have been severe delays since 6am between Sevenoaks at the M26 / A21 and Godstone at the A22 / B2235.
UPDATE - A spokesman for Kent Police said: "Kent Police was called today at 5.41am to a report of a vehicle on the hard shoulder between junction 5 and 6 of the coastbound carriageway of the M25."
All lanes have now been reopened.
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