Police are appealing for information following an assault in Nottingham Road, at around 5.15am on Saturday, November 17.
A 29-year-old man was walking home with friends when they passed a group of men and a verbal altercation ensued.
One of the men then punched the 29-year-old in the face causing him to fall to the ground and briefly lose consciousness. The incident is said to have occurred in the street somewhere between Association bar and Boyes department store.
The victim was taken to Royal Derby Hospital by ambulance where he was treated for injuries including a fractured jaw.
Anyone with any information, or who has CCTV installed in the area, is asked to contact us.
Call 1010 and quote the reference number 18000555750 and the name of the officer in the case, PC Sean Davis, in any correspondence.
You can also call Crimestoppers anonymously on 0800 555 111.