Wiltshire Police are appealing for witnesses following an unprovoked attack on a man in Swindon town centre.
The incident took place on shortly after 2.15am on Sunday 3rd March 2013 in Fleet Street outside the Subway sandwich shop.
The victim, an 18-year-old man, was walking towards Bushwackers nightclub when he was punched to the back of the head by a man.
The force of the punch knocked the victim to the ground and he sustained serious facial injuries including a broken nose, cuts to the face and loss of teeth.
The offender is described as a white man, of slim build, approximately 6ft tall, with shoulder length dark hair. He was wearing blue jeans and a jumper.
Acting Detective Chief Inspector Mark Garrett of the Swindon CID said: “This was a horrendous and unprovoked attack which has left the victim with extensive injuries.