I do a lot of urban walking and I always let cars turn off a main road. I'm happy to wait a few seconds. Common sense.
However, once I'm half way across a junction and a car is approaching the junction from my left, minor to main road, they rarely stop. Me being me, I keep walking, carefully, and force them to keep further to the left than they would like.
I always stop for pedestrians who are already crossing a junction.