M25 Traffic Chaos: Multi-Vehicle Collision Causes Long Delays

Strategic Insights -

A severe multi-vehicle collision on the M25 has caused lengthy delays and congestion, with travel time estimates exceeding 40 minutes. The incident occurred on the anti-clockwise carriageway between junctions 16 and 15, with all lanes temporarily closed. National Highways traffic officers have been deployed to the scene, and the incident has resulted in approximately 6 miles of congestion. As of 7:47am, the average speed was reported to be only 10 mph, with severe delays of 53 minutes and increasing.

Key Takeaways:

  • A multi-vehicle collision occurred on the M25 anti-clockwise carriageway between junctions 16 and 15, causing lane closures and extended delays.
  • National Highways traffic officers were dispatched to the scene to manage the incident and restore traffic flow.
  • As of 7:47am, the average speed on the affected section of the M25 was approximately 10 mph, with severe delays of 53 minutes and increasing.
  • The incident caused approximately 6 miles of congestion, with travel time estimates exceeding 40 minutes.
  • Police have confirmed that all lanes have been reopened, but delays of 45 minutes remain, making it necessary for drivers to allow extra time for their journeys.
  • The South Central Ambulance Service, Thames Valley Police, and RBFRS were contacted in response to the incident.

Statistics:

  • All lanes on the M25 anti-clockwise carriageway between junctions 16 and 15 were temporarily closed due to the multi-vehicle collision.
  • The incident resulted in approximately 6 miles of congestion.
  • As of 7:47am, the average speed on the affected section of the M25 was approximately 10 mph.
  • Travel time estimates exceeded 40 minutes.
  • Delays were reported to be 40 minutes and afterward increased to 45 minutes.
  • The collision was a multi-vehicle incident.

Sources:

  • National Highways: East (@HighwaysEAST) tweet on July 1, 2025 at 8:13am
  • National Highways: East (@HighwaysEAST) tweet on July 1, 2025 at 8:44am
  • National Highways: East (@HighwaysEAST) tweet on July 1, 2025 at 7:44am