I'm not sure. Driving standards are abysmal, but that might be for a number of reasons, such as we tend to notice poor driving more than good driving, or because in season we have a large number of first-time visitors on the roads, or because many enjoy looking at the scenery when they should be watching the road.
But driving elsewhere doesn't seem much better. In Manchester and Liverpool, for instance, it's far more aggressive and impatient but I doubt it's any better. And driving the A5 towards the Midlands is Bad Driving 101. But I do wonder if folk ever bother practising reversing. Not only on Mostyn Street, where some people driving Minis can't reverse into bus-sized spaces but in smaller car parks where they seem incapable of reversing into a space - and some even driving forwards into one.