Police have tonight released CCTV images of Roy Thompson - two days after he went missing.
Mr Thompson, 60, left Chesterfield Royal Hospital at about 9.20am on Thursday. These CCTV images show him leaving.
He is white, 6ft tall and of average build. He has short grey hair and was last seen wearing grey tracksuit bottoms and a green polo shirt.
He speaks with a slight South African accent and has links to Manchester.
Anyone with information should call police on 101.