Have been looking at a new build site (still under construction in parts) consisting of various small blocks of flats mostly 3 stories high with 6 to 8 flats directly off stairs. Now contractors seem to have fitted emergency back-up lighting in communal stairwells to flats, but no key switches for isolation to test. Landlord supply is next to front door to each stairwell in locked cupboard, so could be argued that it isn't hard to open cupboard, switch off supply to stairs and perform test that way, but I understood it that key switch should be adjacent to each fitting - I am right in thinking this????