It occurred shortly after 1am on Sunday 2 June 2013, when the victim, a 24-year-old man from Durham, had been involved in a conversation with the suspect. As the suspect turned to leave, he hit the man in the face with a bottle, causing a 2in cut which required medical attention from paramedics.
The suspect is described as white, with a stocky build and short dark hair.
Detective Sergeant Alex Jackson, of Harrogate CID, said:
If you are the person caught on CCTV and you did not commit the assault, I urge you to come forward so that I can eliminate you from my enquiries.
I also need to speak to anyone who was in the club at the time, or can help to identify the man, and ask that they get in touch straight away.
Anyone who can assist with this enquiry is asked to contact Harrogate CID on 101, select option 2 and asked for Alex Jackson. Alternatively information can be emailed to email@example.com.
Or call Crimestoppers anonymously on 0800 555 111 quoting reference number 12130088700.