A woman has been arrested following a fail to stop collision in Clapham.
Police were called at 00:05hrs on Friday, 25 December, to reports of a collision between a car and a pedestrian at Kings Avenue near the junction with South Circular Road, Clapham.
The car failed to stop at the scene.
London Ambulance Service were called and the pedestrian, a 54-year-old man, was conveyed to hospital.
He is in a serious condition. His next of kin are aware.
A 24-year-old woman was subsequently arrested on suspicion of causing serious injury by dangerous driving and failing to stop.
She remains in custody at a south London police station.
Anyone with information or who may have witnessed the incident is asked to call the Serious Collision Investigation Unit in Merton on 020 8543 5157 or the police non-emergency line on 101.