Overview

• The anti-clockwise carriageway remains closed between J25 (Waltham Cross) and J24 (Potters Bar) after a blaze involving a lorry carrying hay bales.
• National Highways: East reports about 13 miles of congestion back to J27 with delays of around 120 minutes.
• Hertfordshire Fire and Rescue, London Fire Brigade and National Highways are on scene coordinating the response and traffic management.
• Inrix says traffic was held for about 90 minutes and some vehicles are being let through in lane four at intervals, though long queues persist.
• A signed hollow-square diversion routes traffic from J25 onto the A10, across the A406 North Circular and up the A1 to rejoin at J23, and drivers are urged to consider their journeys.