The M25, one of the busiest motorways in the UK, was closed in both directions...

Published: 12:43 pm November 17, 2024
Updated: 12:12 pm October 8, 2025
M25 Closed in Both Directions Following Serious Collision Near Heathrow

The M25, one of the busiest motorways in the UK, was closed in both directions this morning (Sunday, November 17) following a serious crash near Heathrow.

Details of the Incident

Emergency services, including an air ambulance, responded to the collision involving a car and a motorcycle between junction 15 (M4) and junction 16 (M40) near the Thorney Interchange in Buckinghamshire.

The incident, which occurred during the morning hours, also resulted in a fuel spillage on the clockwise carriageway.

Traffic was brought to a complete standstill in both directions to allow emergency services to attend the scene.

National Highways Statement

National Highways provided an update, stating:

“Traffic has been STOPPED in both directions on the #M25 in #Buckinghamshire between J15 (#M4) and J16 (#M40) due to a serious collision involving a car and a motorcycle.
Emergency services, including an air ambulance, are in attendance.”

Impact on Traffic

  • Major Delays: Significant congestion has been reported, with traffic backed up for several miles in both directions.
  • Nearby Areas Affected: The closures are impacting motorists travelling to and from Heathrow and nearby areas such as Slough, Windsor, and West London.
  • Diversions: Drivers are being urged to find alternative routes and avoid the area if possible.

Emergency Services Response

The air ambulance landed on the carriageway, underscoring the severity of the incident. Medical teams and other emergency responders are on-site, working to assist those involved and clear the road as quickly as possible.

Advice for Motorists

Motorists are advised to:

  • Check traffic updates before setting off.
  • Use alternative routes if travelling between junctions 15 and 16.
  • Expect delays if already on the M25 near the affected area.

Further updates are expected as authorities work to reopen the motorway and investigate the circumstances of the collision.

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