Overview
- All four anti‑clockwise lanes between J10 (Cobham) and J9 (Leatherhead) are closed after a lorry overturned, with an official Hollow Square diversion in place via the A3, A240, A24 and A217 to rejoin at J8.
- Delays of around an hour are building with queues of six to eight miles back to J11 and heavy traffic on local roads through Byfleet, Cobham, Oxshott and Chessington.
- South East Coast Ambulance Service said crews assessed and treated two male drivers at the scene, while Surrey Police reported a collision involving a car and a lorry.
- National Highways and police advise motorists to follow diversion signage, plan ahead, allow significant extra journey time and consider rerouting or delaying travel.
- The latest closure follows two separate major incidents on Wednesday: an M25 vehicle fire and collision between J29 and J28 that caused eight miles of congestion and about 80‑minute delays after reopening, and a serious lorry crash in the Holmesdale Tunnel that shut the clockwise side for hours as two people were taken to hospital by road and air ambulance.