He was verbally abused by one boy, and hit from behind by another before being either kicked or hit with a skateboard.

Dreadlocked hair

Officers said the main offender was aged in his mid to late teens, 5ft 8in tall, and of medium build.

The victim described him as being of mixed race with dark brown hair in dreadlocks. He was wearing dark clothing.

Another of the youths in the group may have been using crutches, police said.

Any witnesses to the incident, in particular some women waiting at a nearby bus stop, are being urged to contact Kent Police.