The victim, a man in his 30s, was walking in Week Street when the incident happened at around 4.35am on Sunday 19 November 2023.
He was approached by a group of men who were unknown to him, one of whom is reported to have punched him in the face and caused a cut that required stitches.
Can you help?
Officers believe the man shown in the CCTV image may be able to assist with their investigation and would like to hear from anyone who recognises him, along with anyone else who may have witnessed the incident.
Please call the appeal line on 01622 604100 quoting reference 46/205080/23. You can also contact the independent charity Crimestoppers anonymously on 0800 555111 or by completing the online form.
