Police are investigating an assault which occurred at about 3:34am on Sunday 30 December.
A 37-year-old man from Workington was punched in the mouth causing a split lip.
A Cumbria Police spokesman said: “The assault occurred in the smoking area of Padua’s on Washington Street in Workington.
“The offender was a white male.”
Police are appealing for witnesses or anyone who can identify the offender to contact PC1581 on 101 or call Crimestoppers on 0800 555 111.