Overview
- A serious collision shortly before midnight on Monday between Junction 10 (Wisley) and Junction 11 (Chertsey) on the M25 left an 18‑year‑old man dead and prompted a police‑led closure of both carriageways.
- Surrey Police carried out overnight investigations and confirmed the fatality while National Highways said scene examinations finished around 06:00 and recovery and clearance extended into the morning before the motorway reopened.
- The closure and subsequent release of held traffic caused heavy knock‑on delays on the M25 and local roads and prompted warnings to travellers to Heathrow and Gatwick to check journey times.
- Multiple separate incidents on bank‑holiday travel routes, including serious collisions on the M56, M6 and a crash on the M65, added to congestion and stretched diversion routes and traffic management resources.
- Police have appealed for anyone with dashcam, CCTV or other footage from the J10–J11 area to contact Surrey Police as enquiries continue and motorists are advised to follow diversion signs and allow extra travel time.