Police were called at approximately 18:40hrs on Saturday 27 July to Marylebone Road, NW1 – opposite Madam Tussard’s – following reports of a motorcycle in collision with a pedestrian.
The pedestrian, a 50-year-old man, was taken to a central London hospital where he remains in a critical condition.
Officers are appealing for witnesses and in particular a licensed black cab driver who was close to the collision to contact them.
The motorcyclist stopped at the scene.
Anyone with information is asked to contact officers at the Southwest Traffic Garage on 020 8941 9011.
Enquiries continue. No arrests.