Detectives are appealing for witnesses following a fatal collision in Merton.
Police were called by the London Ambulance Service at 17:19hrs on Thursday, 3 October to Bushey Road / the A3 slip road following reports of a collision involving a bus and a motorcycle.
The male rider of the motorcycle, a 29-year-old man, was taken to a south London hospital where he died a short time later.
Next of kin have been informed.
The driver of the bus stopped at the scene. There have been no arrests.
Detectives from the Roads and Transport Policing Command are investigating.
They would like to hear from anyone who witnessed the collision or who may have captured it on dashcam footage.
Anyone with information is asked to call the Serious Collision Investigation Unit on 020 8543 5157 or via 101 quoting reference Cad 6060/03Oct.