Heavy traffic and congestion on M25 and A12 after accidents in

There is heavy traffic on the M25 after two accidents created a tailback of rush-hour commuters. There is queuing traffic for the Dartford Tunnel anticlockwise between junction 1a and junction 31, for Thurrock and Lakeside Shopping Centre, with delays back to junction 2, for the A2.Nine miles of queuing traffic has been reported, all the way back to the Brook Street roundabout. To make matters worse, an accident involving two vans on the A12 approaching the notorious Brentwood roundabout has...