On the 3 occasions in my life I have had to stay in an NHS hospital it has been pretty grim. I'm not usually fussed when it comes to food and will normally eat anything and everything but the food in hospital did not taste right and looked very un-appetising, very similar to the photos in the link.
The private hospital I stayed in many years ago wasn't much better.
Number 8 looks absolutely hideous. I feel sick thinking about it. My mum was in hospital recently, and while the food didn't look fantastic it was ok. She liked the puddings anyway. Well, they were just pots of yogurt.