One of my headscanons is that many operatives Nigel knew, for example Sonia, Lee, or Sector E, left him gifts even though they thought he disappeared. The candles and Nigel's photo make me think that after they searched for him, they presumed him dead.
Something I don't remember seeing on the door is the red paint stains from the door number. If much time had passed, the paint would have worn off, it wouldn't have run/flaked off. Perhaps when they added the "keep out" sign they decided to repaint the door number, maybe because of the wear and tear it already had.
















