Detectives are appealing to trace a cyclist following the death of a pedestrian in Shepherd's Bush.
The incident occurred at approximately 11:00hrs on 30 December 2016 where a cyclist was in collision with a pedestrian in Frithville Gardens, W12.
The pedestrian - a 72-year-old man - was taken to a central London hospital by the London Ambulance Service for treatment to his injuries but he died on 15 January 2017.
His next of kin have been informed. The Coroner has also been informed.
The Metropolitan Police was informed on the death on 27 January 2017 and detectives from the Met's Serious Collision Investigation Unit have launched an investigation.
Detectives are appealing to trace the cyclist - who is described as a black man - and stopped at the scene of the collision, but as police were never called to the incident they have no record of who he is.
It is of paramount importance that the cyclist comes forward and assists detectives with their investigation.
They would like to reassure the individual that at this stage, all they wish to do is speak with them and establish the circumstances that led to the collision.
Given the time of day there would have been a number of people in the vicinity and detectives are also appealing to anyone who witnessed the collision to come forward.
Anyone who witnessed the collision or has any information is asked to contact the Serious Collision Investigation Unit at Merton Traffic Garage on 0208 543 5157 or via Twitter @MetCC
Alternatively Crimestoppers can be contacted anonymously on 0800 555 111.