Police have released CCTV footage of Mark Mitchell, aged 41, at Milton Keynes General Hospital, where he was last seen at 11.40am.
Mark is white, around 6ft, and slim. He is bald and when last seen he was wearing a white and grey cardigan and a dark coloured trolley.
Sgt Mark Lacey, said: “I am very concerned about the welfare of Mr Mitchell and we are doing everything possible to try and locate him.
“I would also like to appeal directly to Mark and ask him to get in touch with hospital staff or the police as soon as possible on 0845 8 505 505.”
Alternatively, if you don’t want to speak to police or leave your name, call the charity Crimestoppers on 0800 555 111.
