I'm not sure where you've been. Even though you are an electrician, whereas I am not (although I have always taken an interest in such things), over the years and decades even I have seen countless domestic CUs containing mixed-brand devices and I can but presume that most were installed by 'electricians' (since few DIYers would contemplate doing such work).
2013, actually. I can understand that view. However, as you say, I imagine that Part P was 'almost eliminated' (in England) after only about 8 years because it was apparent that it was not actually achieving anything significant. I think the issue is that there are (surprisingly) so few domestic deaths and serious injuries due to electricity, with only a small proportion of those being attributable to work by unqualified (and not supervised) people that there is very little scope for any sort of regulation to 'improve' the situation much.
However, for what it's worth, I do share (in relation to those who undertake paid electrical work and, particular, those who perform EICRs) your view that such people should be fairly rigorously regulated/registered/licensed/whatever, noit the least so that those who fell short of a reasonable level of competence (and 'integrity') could be prevented from continuing tio try to oractise the trade.
