In the video, the driver can be seen lying across the seats in the van while the engine is left running. He was spotted by a dog walker near Edinburgh’s Royal Infirmary Hospital, who claims the driver was sleeping there for more than an hour. The dog walker, who did not want to be named, had dropped his mother-in-law off at the hospital before spotting the driver. He said: “I was dropping off my mother-in-law at the hospital and thought I’d take my dog for a walk while I was waiting on her. “I saw this NHS delivery van parked in a layby facing the hospital, and I noticed that the driver was lying asleep across the seats.