Motorists on the M25 experience travel disruption after a fire breaks out in nearby dry fields and produces thick smoke, according to reported footage. The blaze occurs beside a busy stretch of the motorway and leads to visibility problems for drivers, with smoke reducing sightlines to only a few metres ahead in places. As the fire continues, vehicles are affected by the resulting conditions, creating slowdowns and congestion on the route. The reports describe dramatic scenes of drivers engulfed by smoke and unable to see clearly while traveling through the affected area. The incident highlights the impact that brush or field fires can have on major roads, particularly when fuel is dry and combustion produces heavy smoke. Information on the number of vehicles involved, any closures, injuries, or the exact cause of the fire is not provided in the supplied summaries. Overall, the accounts focus on the roadside fire, the heavy smoke generated, and the resulting disruption to road traffic on the M25.