Saw someone use one of those really loud ones on Friday afternoon, literally everyone within 50 yards on a busy street stopped and turned round. Then tittered, at the cyclist though, not the pedestrian he was trying to shame for stepping out.
Earlier in the day I was walking down an alleyway, I knew there was a cyclist without looking behind me cos of my cycling-spider sense, but the guy did ring his bell as he approached. It was one of those old school ring-ring ones. Have to say they sound a lot less intimidating than the ‘ding’ ones that shops all seem to sell.