A woman suffered a broken nose and a man was hit, kicked and had his ear bitten during an attack in a Barnsley bar.
Detectives investigating the incident at Pulse Bar, Wellington Street, have issued CCTV images of two men they believe could hold vital information.
They believe a number of people were involved in the assault at around 2.20am on Monday, June 8.
A South Yorkshire Police spokeswoman said: “We recognise that the CCTV images are not the best quality, but we rely on CCTV taken from businesses and private premises, so we can’t determine the quality.”
Call South Yorkshire Police on 101 or Crimestoppers on 0800 555111.