Jack Langford has been missing from Worthing since Monday 4 February.
He is 6’2″ with neck tattoos of a cross with wings and tattooed arms. He may be wearing a matt black slim fitting puffa jacket, with tight fitting joggers, trainers and a black hat, and may also have a large black suitcase and also a black rucksack.
Jack is believed to have travelled to the East Croydon area of South London and may be staying in a local hotel.
There are no suspicious circumstances relating to his disappearance but both police and family are concerned for his welfare.
Anyone who has seen Jack or who knows where he may be is asked to contact Sussex Police online or by calling 101, quoting serial 776 of 04/02.