The victim was enjoying a night out with friends when he is alleged to have been assaulted by two men unknown to him near Spital Street at around 4.30am on Saturday 2 April 2022.
The man, who is in his 20s, was with a friend when he was reported to have been approached by three men, before one of them punched him and the second suspect used a belt to assault him.
Following the assault, the offenders are alleged to have got into a car and driven it towards the victim, who received minor injuries.
Officers have carried out several lines of enquiry and are now appealing for witnesses to contact them.
They are also interested in speaking with a woman who was seen with the suspects, she is said to be white, of petite build, around 5ft 4ins tall and wearing blue jeans.
The suspects have been described as a white male with blonde hair and a black male who was wearing a belt.
Anyone with information can call Kent Police on 01474 366149 quoting crime reference 46/61238/22.
You can also contact Crimestoppers anonymously on 0800 555 111 or by using the online form on their website.