Four-vehicle crash closes southbound M40, causing up to 90-minute delays
A collision involving four vehicles forced the southbound M40 between Junction 1a and Junction 1 to close, creating seven-mile queues and delays of about 90 minutes before the road was reopened.
National Highways announced that the southbound M40 between Junction 1a (M25) and Junction 1 (Denham) was closed after a four-vehicle collision reported at 05:45. The incident produced tailbacks of up to seven miles and delays estimated at 90 minutes, which began to ease after the road was reopened.
Thames Valley Police confirmed the crash resulted in minor injuries and said traffic officers were on scene to manage the closure. > "This was a minor injury collision involving four vehicles. The road has just re-opened and the backlog is clearing," a police spokesperson told The Mirror.
The Met Office issued a yellow fog warning covering much of England and parts of eastern Wales, noting reduced visibility and possible travel disruptions. Fog conditions were expected to persist into Monday morning, with visibility in some areas dropping to around 50 metres.
Earlier, National Highways reported a separate two-vehicle crash on the M4 near Heathrow, which had caused three miles of congestion before clearing in the early hours of Monday.