Billy Smith was last seen in the Bow Arrow Lane area around 3.25pm on Friday, June 17, 2022.
He stands five feet eight inches tall, has a medium build, brown eyes, and shaved black hair.
He was last seen wearing a grey t-shirt and black and grey shorts.
Mr. Smith may have taken public transportation into London.
Anyone with information is asked to contact Kent Police at 101 and reference 17-0900.