Traffic officers are appealing for witnesses following a serious collision in Enfield.
Police were called at 22:25hrs on Monday, 22 February to reports of a road traffic collision on the M25 at Junction 25 of the slip road involving a lorry and a car.
Officers, Hertfordshire air ambulance service, and London Fire Brigade attended the scene.
The driver of the car, a 52-year-old man, was taken to an east London hospital where he remains in a critical condition. His injuries are life threatening.
No arrests have been made. The driver of the lorry was uninjured. He stopped at the scene and is assisting police with their enquiries.
Any witnesses are asked to contact the Chadwell Heath Serious Collision Investigation Unit on 0208 597 4874 or Crimestoppers anonymously on 0800-555-111.
+ Road closures were in place while the emergency services dealt with the incident. The road was reopened shortly after 04:30hrs.
