A man was beaten to the ground and robbed of his car after stopping at traffic lights in Hatch End.
Police are appealing for witnesses to a car jacking that took place in the Uxbridge Road, Hatch End on July 8 at 11.15pm
A 59-year-old man was robbed of his grey BMW M3 by as many as three men.
As he sat in his car at the temporary traffic lights before the King George V roundabout, the man felt a shunt from behind and got out of his car to assess the damage.
A white man, 5ft 6in tall, wearing a white ski mask, got out of a small car.  
The victim became suspicious and began to run away. He was followed and hit and fell to the ground. The man's keys were grabbed from his hand and his car was driven off.
The victim suffered a fractured forearm and was taken to hospital.
Anyone with information on this crime should call Harrow Crime Squad on 020 8733 5407 or call Crimestoppers anonymously on 0800 555 111.