Police would like to speak to these men after a student with his girlfriend had his jaw broken on a night out in Brighton.
The 20-year-old victim, an Italian student at the University of Brighton, was walking to get a bus home with his girlfriend when they were confronted by a group of men and women in Air Street at about 4am on Saturday 15 March.
One of the men began talking to the victim, who lives in Hove, before another punched the student in the face outside Evans Cycles.
The victim suffered a broken jaw and had to go to Royal Sussex County Hospital for treatment.
Detective Constable Kerri Bartup said: "We need to speak to each of the people in the CCTV footage about what happened to see what they saw and heard.
"This was an unprovoked attack while the victim was trying to get home with his girlfriend.
"If you recognise any of the men in these pictures or know where they are, please contact me."
Anyone with information should call 101 quoting serial 194 of 15/3, email email@example.com or call the independent charity Crimestoppers anonymously on 0800 555111.