The government bodies and industry failed completely to get it right first time for various reasons, some technical, some social, as noted here. We do need a better
And a classic case in point was the roll-out of the electricians Part P qualification and the new wiring colours and certificate/inspection for electrical wiring changes.
If we accept that there were rouge and unsafe so called electricians out there and unsafe installations were being done the you can see/understand the move to tighten up the industry and pull it in line with the old Corgi and now Gas Safe requirements.
What follows is how crazy this got.
Before I retired when these new regs came out i was a Chartered Electrical Engineer and a member of the relevant Professional Institutions. For those not familiar with what my then status meant then in short I was fully qualified to work on public, safety critical electrical systems, design them, install them and able to be a "expert witness" in court cases.
So with the new Part P regs I was effectively barred from doing any "new" domestic installations and even worse still changing the wiring of an existing installation in "wet" rooms. Wet rooms being kitchens, bathrooms etc. Technically not allowed to change a ceiling, fit a new bathroom shaver lamp etc. EVEN in our own homes. Now *many* of us got really pissed off with this as you can imagine.
Now the classic of classic F-ups that is still exploited today.
New installations require the new wiring colours. However when the regs changed there was plenty of the old wiring in stock around the UK. So the cowboys bought as much old stock as they could to allow them to carry on doing new electrical installations in homes/extensions and as the wiring was in the old colours then they could dodge the Part P requirements etc.
I understand that to this day there are cowboys out there still using old wiring stock and skirting round Part P and Joe public who don't really know/understand about Part P like they do with Corgi / Gas Safe.
Another classic/great fowl up.