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Drivers are facing delays after a crash involving one car on the M20 near Leybourne.
The road was closed London-bound between junction 4 (Leybourne/A228) and junction 3 (Borough Green/M26), but has since partially reopened.
Ambulance crews treated one person at the scene.
The road was closed while police recovered the vehicle.
Delays have also been reported on the coastbound carriageway.