The incident between a pedestrian and a police car happened in Denmark Hill just after 1.20pm today (March 18).
Officers and London Ambulance Service attended and found a woman injured.
Denmark Hill Camberwell closed after incident: Live updates
She was taken to hospital for treatment where her condition is unknown.
No police officers required treatment.
Road closures are currently in place at Denmark Hill and Camberwell New Road.
A spokesperson for Metropolitan Police said: “Officers were called at 1.21pm on Tuesday, 18 March to a report of a collision involving a police vehicle and a pedestrian between Camberwell Green and Denmark Hill in Southwark.
“The London Ambulance Service (LAS) attended and a 27-year-old woman was treated at the scene. We await an update on her condition.
“No police officers required treatment.
“Road closures are currently in place at Denmark Hill and Camberwell New Road.”