Police in West Sussex are searching for 17-year-old Dylan Weatherley, who was last seen at his home in Chichester on 8 January.
Dylan is described as black, 5'7" and slim.
He comes from the N17 area of North London and enquiries are also being made there.
Police and family are concerned for his welfare, so if you see Dylan or know where he is, please contact Sussex Police on 101, quoting serial 593 of 11/01.