Weekend chaos on major motorway as crash sparks long delays and 3.5-mile queues

The M25 forms a ring around London, with its anticlockwise and clockwise ends at the Dartford Crossing (A282). It connects to the M1, M3, M4, M11, M23, M40, M20 and other major routes, making it the primary orbital link for long‑distance and commuter traffic.