Marilyn

I live in a small block of flats with 5 floors. We can't seem to get our contractors to set the correct timing for lighting in communal hallways and stairs. In the summer the lighting came on at 6pm and it has just changed to after 8pm + for the winter. When I came home at 8pm the hallways were dark and the emergency lighting wasn't bright enough to light the stairs. It's a mixed building with children, retirees etc What times should lighting be set at in summer and winter in the London area? No one seems to know the correct timingo. We get charged for each visit. With regards emergency lighting - isn't this enough to guide you safely if there's no lighting? Thanks N