Edinburgh tenements have stair lighting which used to be provided by the council but a few years ago they stopped doing replacements on it and now owners need to replace broken bulbs and lights themselves. Of course most landlords are self entitled people who couldn’t change a light bulb if it was their job (which it is) so chances are they won’t know how.
You need a 2 prong coughtrie screwdriver for the “security” screws (that’s security through obscurity).
And Crompton Stair Replacement Tube
The bulbs are: Edf8/35 Fusion 8W T5 300mm Miniature Fluorescent Tube 3500K
Then you send the bill split between all the owners.