EMERGENCY barrier repairs following a collision on the M40 southbound have traffic stretching back for 12 miles this morning.

Drivers heading towards London are being impacted by a lane closure at Junction 2, Beaconsfield, with queues back to Junction 5, Stokenchurch, and onto the A404 heading southbound towards the M40. 

The average speed is 40 mph with a travel time of 1hr and 15mins

Lane two was reopened at 7.45am.