The victim was hit in the face after he asked a man who had been deliberately bumping into people on the dancefloor to leave him alone. He was treated at hospital and found to have suffered a fractured eye socket, for which he needed two have metal plates surgically fitted. PC Marc Guibert, of Leeds District CID, says: "The victim received very serious injuries and we urgently need to identify the man shown in the CCTV image.