A gang of six men left a man with a broken nose and fingers after they attacked him in NB’s bar in Northampton.
The assault took place in the Bridge Street venue after the victim, a 24-year-old man, walked out of the toilets at the back of the club, near the garden and smoking area.
The six men, who are all described as Eastern European, pushed him to the ground and kicked and punched him.
One of the men is described as slim, with black hair and wearing a grey polo shirt with a red Ralph Lauren logo and blue jeans.
The assault happened on Sunday, February 2, between 1.30am and 2.30am.
Witnesses, or anyone with information, can call Northamptonshire Police on 101. Alternatively, information can be given anonymously to Crimestoppers on 0800 555 111.