Overview
- A collision on the M25 clockwise between Junction 24 (Potters Bar) and Junction 25 (Waltham Cross) has closed lanes 3 and 4 and prompted an active response from emergency services.
- National Highways says vehicle recovery is being arranged and the closures have produced about four miles of congestion with roughly 45‑minute delays for drivers.
- Live images and on‑the‑ground reporting show queues building and traffic crawling on the clockwise carriageway behind the crash.
- Early live coverage briefly reported a different lane‑closure count, but National Highways' update that two lanes are closed remains the official account.
- Because the M25 is London's orbital motorway, even short closures can cause extended knock‑on delays across connected routes and drivers should expect slow traffic until recovery and scene clearance finish.