You're probably right on the inspections front (I once opened another fire exit to find about 20ft of the yard behind filled with shopping trolleys right up to the doors themselves, and no way to move them without going around the building) - as for closing and locking it may have had some sort of returning arm fitted but I couldn't swear to it. As for being like that now, the place was flattened a few years back - I think there's a Chinese takeaway there now.
Neil - looking forward to seeing some more pics, I've enjoyed watching this one come together.