Lincolnshire Police are looking for witnesses after an assault in a Lincoln bar.
The incident happened on November 19 at Status bar in Silver Street, at around 4am.
According to the victim, Elliott Twell (20), he had been at the venue since 2.30am, but later in the night he was allegedly assaulted at the rear of the building, between the DJ booth and the toilets.
The building was busy at the time and people may have seen the attack take place from the dance floor.
After the attack, Twell suffered facial bruising and a chipped tooth.
He has consented to his name being released due to his work at The Scene nightclub in Lincoln, meaning he is quite well-known in the city.
Anyone with information should contact PC219 Donna Irving of Lincolnshire Police on 101, quoting incident number 434 of 19/11/14.
Alternatively, call Crimestoppers anonymously on 0800 555111.