A missing man who was last seen at an Oxford hospital is being urged to contact police.

Mark Preen, 45, left the John Radcliffe Hospital bare-chested at about 2.15am yesterday and officers are now worried about his safety.

He is described as white, about 6ft tall and slim, with a shaven head, blue eyes and was wearing black jogging bottoms and brown trainers.

He was carrying a grey T-shirt that was cut.