A serious crash leads to major disruption on the M25 motorway in Kent, with National Highways warning drivers to avoid the area. Multiple lanes are closed as the incident affects traffic flow, and congestion builds to near standstill conditions. Drivers face significant delays, with reports indicating wait times of around 90 minutes and in some cases up to two hours. The disruption follows an overturned caravan, which is reported to be the cause of the crash and subsequent traffic chaos. National Highways issues guidance intended to reduce traffic around the closed section, reflecting the severity of the disruption and the slow-moving queues on the motorway. Emergency and recovery activity is ongoing as authorities manage the closure and the impact on journeys along this route. The situation is monitored as traffic conditions change and lanes reopen.