Detectives from the Met's Serious Collision Investigation Unit are appealing for witnesses following a collision involving a child in Cricklewood.
Police were called at approximately 15:03hrs on Thursday, 28 December to reports of a silver VW Golf in collision with a pedestrian on Shoot Up Hill in Brent.
Police and London Ambulance Service attended the scene. The pedestrian, a 3-year-old boy, sustained serious injuries. He is currently in a serious but stable condition in a central London hospital.
The driver stopped at the scene and has been assisting officers with enquires.
No arrest has been made.
Anyone who witnessed the collision or has information is asked to call the Serious Collision Investigation Unit on 0208 991 9555 or police on 101.
Alternatively, call Crimestoppers on 0800 555 111 if you would prefer to remain anonymous.
You can also tweet @MetCC