A 21-year-old has been arrested after a pensioner was hit by a moped outside Clock House railway station.

Police were called to Beckenham Road, opposite the railway station at 1.44pm to reports of a moped in collision with a pedestrian.

London Ambulance Service also attended and took the pedestrian, aged in his 70s, to a south London hospital. His condition is still critical.

The 21-year-old rider of the moped stopped at the scene and was arrested and taken to a south London police station, where he remains in custody.

Detectives from the Serious Collision Investigation Unit based at Catford are investigating.

Anyone who witnessed the collision is asked to call police on 020 8285 1574.