most of what was said is true, and as for the window cleaning they sub it out. But a new M&S store has just opened in a out of town park,Teesside park, near iddlesbrough the largest one opened in the UK this year, and they have employed their own store cleaners, not initial. This is going back to 20 years ago. I dont know who does the window cleaning at this store, but will try and find out.
Robert t