Firefighters released a trapped woman after two cars collided in Downs Bridge Road at the junction with Bromley Road in Beckenham.
Two fire engines and a fire rescue unit were called to the incident.
The woman was freed and taken to hospital by the London Ambulance Service crews.
Local road closures remained in place after firefighters left the scene.
The Brigade was called at 1245 and the incident was over for fire crews at 1332. Fire crews from Beckenham, Bromley and Lewisham fire stations attended.