Overview

• National Highways says the clockwise carriageway is closed between Waltham Cross (J25) and the M11 (J27) after a collision involving a car and a motorcyclist.
• Essex Police confirm a serious incident with emergency services at the scene and advise drivers to avoid the area.
• National Highways: East reports delays of roughly 30 minutes with queues building back toward J24 near Potters Bar.
• The crash location is near the Bell Common tunnel, with heavy rain in the region and a Met Office yellow wind warning in effect.
• Separately, a clockwise closure in Kent between J3 and J4 is reported with a diversion in place, with local reports attributing it to a lorry striking a bridge.