Didn't say to install, I said sort something out.
Yes rules and regs are in place currently for plumbing and heating and have done for years, but cowboys persist! Surely these cowboys work under the same rules as you and I, but yet nothing is done. The regulatory bodies are not interested in policing the cowboys, just making money from people willing to toe the line.
My OFTEC inspection case in point. The inspector,(self confessed failed engineer, not my words), performed the inspection and went to the far end of a fart, chapter and verse. Good I thought at least my monies being well spent. Now at the end of the inspection I asked what is OFTEC doing about unregistered installers, 'We don't exist to deal with that, we are only here to police it's members'.