Police are appealing for information and witnesses following a fatal road traffic collision in Hillingdon.
Officers were called to the A40 east near Swakeleys roundabout at 04.20hrs on Tuesday, 17 March to reports of a body in the road.
Police attended. The body of a man was found in the carriageway.
Officers believe they know the identity of the deceased, who is thought to be 23-years-old, and have informed his next of kin.
Officers from the Serious Collision Investigation Unit at Alperton are investigating and working to establish the circumstances of the incident; but at this stage believe the man was in collision with a lorry.
The driver of the lorry stopped at the scene. They were not arrested.
Anyone who witnessed the incident or has information or dash-cam footage which could assist police is asked to contact Alperton Traffic Garage on 020 8246 9820.