On an intersection (crossing or T junction) without traffic light nor marked foot crossing, which is very common on less busy and local roads, do pedestrians must give way to vehicles?
They should, for their own safety, but there are situations that are not really about safety. For example, a pedestrian is about to cross on a road that ends at a T-intersection. A vehicle is fastly approaching on that road and it ignores the pedestrian and just stop in front of them to give way to or to observe other vehicles on the continuing road. It effectively blocks the pedestrian way (usually the spot with a ramp to the path).
Is this the right and expected behaviour? The vehicle could slow down or stop just 1 or 2 meter before the line and let the pedestrian cross first. They will have to stop at the line anyway.
Now imagine that same intersection, which is empty most of the time, can occasionally get very busy at times and vehicles stop and go, take turn with the right off way rules, and at the same time ignoring pedestrians which have to wait for a long time until the traffic clears up.
This page states it pretty clear:
give way to pedestrians on or entering a road you’re turning into
However, the rule does not mention about pedestrian entering the road the vehicles are in. And most motorists seem to disregard this anyway and assume that pedestrians have to give way to them. Even on crossings with traffic light, a lot of them will scare off pedestrians by pushing forward or creeping while the pedestrian light is still blinking!
Pedestrians always have right of way.
(Yes, Even when they cross roads like a drunk person playing frogger)