Earlier quoted context omitted.
Having a bell on your cycle helps a lot with this - just give it a ring a few times before overtaking people on a combined cycle/foot path and they will generally (although not always) try and do the sensible thing. In my own experience I was somewhat surprised to find that using a bell actually works a lot better than saying "Excuse me please". Also, some pedestrians will do intentionally stupid things when encounte…
I am generally a pedestrian, and in my experience when I am running on a paved path and cyclists go around me, they sometimes say "on your left" which works pretty well, but bells are great. edit: doh!
[NB This isn't a serious problem, but I do spend a reasonable amount of time on cycle paths trying to co-exist with other path users on civilised terms!]