Police are seeking witnesses of any information about an unprovoked attack on a visitor to the city on 15 May between 16:00 and 16:20.

A 24 year old man visiting from Essex was set upon by two men who are both described as being about 1.7m tall [5'6"] one with short fair hair and the other with brown hair.

Anyone with information should phone 101 quoting serial 47180067090.