Police received a call from a member of the public who said they saw the man had been talking with another man, before second man head-butted the victim, caused the victim to fall to the floor.
Kent Police’s investigating officer DC Laura Keeble said:"‘A witness was initially spoken to by officers at the scene. He described seeing a skinny white male, around 5ft 10ins tall and wearing a blue puffer jacket with a grey hooded top underneath, and blue jeans."
Anyone with information about the incident is asked to contact DC Keeble at Tonbridge Police Station on 01732 379146 quoting incident YY/22980/13. If you wish to remain anonymous, call Kent CrimeStoppers on 0800 555 111.
More top news
James Wright has Monday's forecast for the east of the region.
James Wright has Monday's forecast for the west of the region.
At least 13 people have been injured after a car was driven into a nightclub in Gravesend.