Lancaster Police are trying to trace this man (pictured) after a reveller was left needing stitches following an assault in Lancaster before Christmas.
The incident happened outside McDonalds on Cheapside at around 5.00am on Friday 18th December when the victim, 26, was out with two friends and he was punched from behind.
The victim fell to the ground and the offender then stamped on his head.
The victim received stitches to the inside of his mouth after attending hospital. He was also left with bruising to his body.
DC Jill Neil from Lancaster CID said: “The victim was left with some nasty injuries as a result of this unprovoked attack.
“I would ask you to cast your mind back and if you remember seeing anything that morning that could help us with our investigation, please get in touch.”
• Anyone with information can contact Lancaster CID on 01524 596639 or they can call 101 quoting incident reference LC-20151219-1698. Alternatively Crimestoppers can be contacted anonymously on 0800 555 111 or online at crimestoppers-uk.org