4 vehicles in QE2 bridge crash on M25 in Essex / Kent

There is queueing traffic with three lanes closed due to an accident involving four vehicles on the M25 QE2 Bridge. The incident has occurred clockwise from J31 A1306 (West Thurrock) to J1A A206 (Swanscombe). There is congestion on the M25 to J30 A13 (Lakeside / Tilbury).