Detectives are appealing for information and witnesses following a fatal collision in Chingford Hatch.
Police were called to Larkshall Road, E4, at 18:10 on Sunday, 20 November following reports of a motorcyclist in collision with a car.
Officers and London Ambulance Service attended and found a 63-year-old male motorcyclist suffering from critical injuries.
He died at the scene a short while later.
Next of kin have been informed.
The driver of the car involved in the collision stopped at the scene and is assisting police with their enquiries. No arrests have been made.
Enquiries are ongoing.
Anyone with information is asked to call the Serious Collision Investigation Unit at Chadwell Heath on 0208 597 4874.