Mathew Rivett, 27, was punched, kneed and thrown down stairs at the venue on Sunday night.

He has spoken briefly to police but is yet to give an official account of the assault, which was captured on mobile phone by some patrons and witnessed by many others.

The venue is also covered by several security cameras.

Police have interviewed a man but have not laid charges.

One witness said the offender, a tall man with a distinctive build, jumped a table and punched Mr Rivett to the back of the head near his neck.

“I’ve had a quick chat to police, but I haven’t gone in and spoken to them face to face,” he said.

“I just want it to be over so I can focus on getting better.”