[Alf Stewart]

Being incredibly geeky picking up on the change to the sets between the first and second series, somewhere that was a seating area in series 1 became a corridor with a lift in the second series.

Admittedly it's incredibly minor compared to how many times the layout's changed beyond recognition in the years since, even without a disaster of some sort to justify it.

It must be the the hospital that's had the most money spent on it in NHS history! It always looks immaculate too. Never any scuff marks on the walls and floors, broken fixtures and fittings and every light appears to work. If I'm every in need of an ambulance, I shall ask to be taken direct to Holby City hospital. 

Though admittedly no-one ever appears to need to give notice when they decide mid shift that they've had enough so I may find my treatment hit and miss.