Drivers on the M25 travelling through Bucks are experiencing severe delays following a crash.

The collision, on the northbound carriageway between Junction 16 and Junction 17, was first reported at around 8.20am.

According to AA Road Watch, traffic is tailing back around seven miles, all the way back to Junction 15. Emergency services are at the scene of the crash.

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Drivers have been warned to expect delays of around 40 minutes if travelling anticlockwise on that section of the M25.

The severity or cause of the collision is not yet known.