Drivers on the A13 are facing delays this morning due to a crash on the M25. 

Three vehicles have been involved in a collision at the Dartford Crossing on the clockwise carriageway. 

Three lanes have been closed a result and motorists are warned to expect delays of up to an hour. 

Queues have formed several miles back and are now close to junction 29 of the M25 where it meets the A127. 

This is causing congestion on the A13 westbound as far back as Orsett. 

Delays are being reported on the A127 this morning with queues forming on the London-bound carriageway near the Halfway House to the M25 junction. 

Heavy traffic has also formed near the Fortune of War roundabout due to queues for the BP petrol station.