<BIG SNIP>
Well now here's the thing, all the electrical contractors that I know, and over the years that number was huge, before I retired, all have to have their work inspected by an inspector who will pick out contractors to inspect at random. That inspection (Anders over to you on this, as I'm going from memory here, but you are living this shit every day), does not look at the company records but at an actual installation that either has been completed or is in the process of being carried. If that inspector finds out that it is not up to the current edition (unless its in the transitional stages between old and new editions of the IEE Wiring Regs., then there are some serious repercussions for the contractor. In a similar vein to that of a discredited doctor of medicine, who can be struck off the medical register, is there something along similar lines for the electrical contractor?
Also am I not correct in assuming that you cannot get a new supply to a new installation connected by the supply authorities if that installation does not meet the latest wiring standards, i.e., wiring regs?
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There is no requirement in law for electricians to be reguarly audited. I think what you are refering to are audits by "professional" bodies such as NICEIC. These are only mandated by the organisation. The cynical would say to make more money.
A good example of this is "Part P" of the building regulations (which ARE law
https://www.legislation.gov.uk/uksi/2010/2214/contents/made https://www.gov.uk/government/publications/electrical-safety-approved-document-p) and notified work. Many pepole will try to tell you that this type of work
has to be done by a Part P registered electrician by law. This is incorrect. It has to have “Reasonable provision shall be made in the design and installation of electrical installations in order to protect persons operating, maintaining or altering the installations from fire or injury.” AND notified to and inspected by buliding control. However Part P covers toom uch for BC to cover so the Competent persons schemes were set up. This allows organisations such s NICEIC to define who is "competent" and process the notifications. Another nice little earner for them.
You can however do the work yourself, tell building control and have them inspect it. However the waiting time for and cost of BC inspection is likely to far outweigh getting a "Part P"
drone registered person to do it.