Shocking footage of the moment a pedestrian was knocked down by a motorcyclist has been released by police.

The 53-year-old pedestrian was hit by the bike while crossing Malden Road at the junction with London Road in Sutton at 00:30 on Saturday.

After receiving treatment for his injuries, the pedestrian was released from hospital.

The CCTV footage was sent out by the Met Police to try to find the motorcyclist.

Det Sgt Dave Jarvis said: "It would have been obvious to the rider of the motorcycle that the pedestrian he had collided with was seriously injured.

"To act in the way he did, shouting at the unconscious man and driving off from the scene without attempting to seek medical help, was a truly heartless act."