What is a "bobby on the beat"?
They had pretty well disappeared long before the tax disc did.
That may well be your experience where you live but is certainly not mine. Yes, there are fewer foot patrols nowadays but they still exist, at least here in South Gloucestershire they do. Their existence will prompt some tax dodgers to pay up even if the chances of being caught are small, just like the chances of being stopped because of ANPR. Without these small deterrences many more drivers would simply drive without paying. It's the nature of the beast, sadly.
If (I know this is never going to happen) the tax disc was reintroduced and enforcement was passed to local councils as a revenue earner the number of untaxed vehicles on our roads would drop dramatically, practically overnight. Can you imagine all those parking enforcement officers having a field day
