My experience with pedestrians letting their death wish take over is usually limited to the West End. There people tend to cross without looking with their back to the coming-traffic. As if not seeing it will make it disappear.
What is (kinda) amusing is that they usually say “sorry” when they realise you’ve just about avoided hurting them. In any case that sort of encounter is not good for my blood pressure, particularly when so many of the bells on the bikes don’t seem to be working.