A serious accident on the M25 in Essex has closed the motorway between junctions 25 and 26, clockwise.The multi-vehicle crash, which involved an HGV lorry, happened around 2.40pm today, and no one is thought to be seriously injured.There is currently heavy traffic and long queues along the section of motorway, and police and ambulance crews are at the scene.Diversions are in place along the A10, A406 and M11.
