Chaos on busy UK motorway as crash in thick fog causes queues near Heathrow Airport

A two-car crash in thick fog blocked part of the M4 near Heathrow Airport overnight, causing three miles of congestion. The incident highlights the travel disruption that poor visibility can bring, with airport passengers also warned to allow extra time.

Police and recovery vehicles attended the collision between junctions 3 and 4 at 11.30pm on Sunday. A Met Office yellow fog warning covered parts of England until 10am on Monday, with possible delays to road, rail and air travel; Heathrow advised passengers to check with their airline and drive carefully.