There is queuing traffic following a crash on the M25 clockwise between Junction 16 (M40) and Junction 17 (Maple Cross) this afternoon.
The Highways Agency is reporting that all traffic had to be briefly held by the exit slip road at Junction 17.
All lanes have now reopened.
Bucks Fire and Rescue Service was called to the scene and the vehicles have been cleared to the hard shoulder.
Motorists are still experiencing delays in the area.
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