A THUG stamped on his victim's head, breaking his jaw and several teeth in an unprovoked street attack.
The assault took place out-side William Hill bookmakers in Harlesden last Tuesday.
The violence, which took place in broad daylight at 3.30pm in Church Road, is being investigated by Detective Constable Eve Brame.
The 25-year-old victim was taken to hospital where he was treated for his injuries.
The attacker is described as a black man, 6ft tall and aged between 18 and 23 years old.
He was wearing a light blue Adidas jacket.
Witnesses should call Brent Police on 0208 733 3709 or Crimestoppers on 0800 555 111.