A Peacehaven man was left with a broken jaw after he was assaulted outside the UMI hotel in Kings Road, Brighton, on Sunday February 17.
The 24-year-old victim was out with friends when the assault took place between 1am and 1.20am. He then went to Royal Sussex County Hospital in Brighton.
Sussex Police said the suspect was a white man, in his early 20s, around 5ft7, of a medium build with a brown beard, plus there was a woman with him.
Call police on 101 quoting serial 126 of 17/02 or Crimestoppers on 0800 555 111.