Yes in the UK roads are not that wide compared here in Oz. But good thing there is they don’t blow horns unnecessarily- only to alert you if you nearly cause an accident. There they respect queue- if you’re in a traffic and you made mistake say you are supposed to be on the left lane so you signal, as it was “sort of your fault” then you wait patiently to be given the way to safely “insert” if they won’t give way then you wait. But here, when drivers signal left they move straight away to the left and if not given way they get angry it’s as if when they signal it is their right to be given way.
And because roads are not wide enough there they are always mindful of other road users- alone or not.
Apologies- just giving my observation.