It is reported the victim was struck and fell to the floor where he was kicked a number of times. He suffered bruising, cuts, the loss of some teeth and was taken to a hospital for medical attention.
The suspect is described as being white and approximately 5ft 10in tall.
Anyone who witnessed the incident or has information that may help the investigation is asked to contact Kent Police by calling 01622 604100 quoting reference YY/15464/18.
Alternatively contact the Kent Crimestoppers charity anonymously on 0800 555 111.