Police are appealing for information after a quantity of alcohol and a staff member was injured at the Curzon cinema.
It took place sometime between 11pm and 11.15pm on the 3rd of April.
When a staff member confronted the man, they were assaulted and left with injuries to their face and arms.
He's described as white, aged between 30 and 40-years-old with a full beard. He was wearing a black hat, three-quarter length olive green jacket, white t-shirt and blue jeans.
If anyone, who was at the cinema or in the Queen Street area at the time, has any information they should contact 101 quoting reference number 42/52466/19.