Officers are appealing for information following a fatal collision on the Old Kent Road.
Police attended a collision between a SAAB and a Mercedes at 04.56 in the morning on Sunday 24 March on Old Kent Road close to the junction with Albany Road.
London Ambulance Service attended and the 48 year old driver of a SAAB 9000 was pronounced dead at the scene.
Next of kin have been informed.
Two passengers in the Mercedes have been taken to hospital suffering from minor injuries.
The 20 year-old male driver of the Mercedes has been arrested on suspicion of death by dangerous driving. He remains in custody.
The Old Kent Road has since reopened. Anyone with information are asked to call officers on 0208 285 1575.