The hunt is on to find a robber who knocked a jogger unconscious and left him with broken jaw during a vicious attack in Sudbury.

The 20-year-old victim had been out for a run when he was approached from behind and punched in the face in Rushout Avenue near Northwick Avenue.

The attack knocked him unconscious for a few minutes and when he came round his bag had been stolen.

Police are keen to trace a Good Samaritan who took the victim to hospital.

He told the victim he saw his attacker towards Northwick Park Station.

The suspect is a white man, aged between 20-30, around 6ft tall and he was wearing a dark brown hat and a long dark brown hooded coat.

Anyone with information about the attack which took place on January 4 at 4.30pm, should call Brent CID on 02087333153 or Crimestoppers anonymously on 0800 555 111.