A 35-year-old man was assaulted by another man in the Grosvenor Casino in Gunwharf Quays.
Police are appealing for the man in the CCTV image to speak to them in connection with the assault that happened on Sunday 6th October 2013.
The victim from Emsworth received facial injuries but they were not life-threatening.
More top news
A review of one of Hampshire's longest unsolved murder investigations has led police to take the unusual step of naming two suspects.
In a report published today, the Transport Select Committee says Government should not proceed with 'All lane running' schemes.
Thursday morning's weather for the west of the region