Detectives are appealing for information and witnesses following a serious collision in Hounslow.
Police were called to Cranford Lane, Hounslow, at 18:15hrs on Thursday, 26 January to reports of a van in collision with a pedestrian.
Officers and the London Ambulance Service attended, and found the pedestrian, a 46-year-old man, injured.
He was taken to a central London hospital where he remains. His injuries are described as life-threatening.
His next of kin have been informed.
The driver of the van stopped at the scene and is assisting police with their enquiries.
Detectives from the Met’s Roads and Transport Policing Command are investigating.
Anyone with information is asked to contact the witness appeal line on 020 8543 5157.