Overview
- A multi-vehicle collision on the M25 anticlockwise between Junction 4 (Orpington) and Junction 3 (Swanley) occurred on Sunday at about 2:55pm and forced traffic to be held while emergency services attended the scene.
- National Highways warned drivers of roughly 50-minute delays and about four miles of tailbacks as queues built toward the Swanley interchange.
- Ambulances and other emergency crews were seen responding to the incident but no official casualty figures or exact vehicle counts have been released in initial reports.
- Traffic was released through lanes 2 and 3 while lane 1 remained closed for recovery work, and National Highways later confirmed recovery complete and all lanes reopened with delays clearing.
- The closure caused knock-on congestion for motorists using the M25–M20 link and drivers were urged to allow extra travel time and follow National Highways updates for travel advice.