OP
Octopus
I'm guessing the answer is that the lights are on a timeclock or photocell so the lights come on automatically.
That way occupants of the flats will be able to see their way up the stairs, without breaching the human rights of any Jewish people who live there, who won't turn lights on on the Sabbath.
Orthodox Jews? legal fight over flats? lights (From Bournemouth Echo)
If THEY don't like it, THEY should move