(a) Lots of work falls outside Part P so it will not be illegal. (b) My very limited experience of electrics as done by kitchen fitters is that perhaps they should regulated (also q.v. the case of Jenny Tonge's daughter and the cooker hood installed by a professional firm with a cable wandering across the wall)
The Scots and NI are free to do their own thing. For energy, Part L, Part J and Part F are all different, which makes life interesting for those of us who write software to check for compliance.
This is more or less my take on it. Unenforceable!
FENSA and CORGI were able to become regulators for two different reasons neither of which apply for Electrics.
FENSA because there really was not much of a diy replacment window market or window replacment by general tradesmen.
CORGI because most people and a lot of tradersmem would not dream of 'having a go' with gas.
With electrics there are many thousands of specialist firms who are not registered and several million general tradesmen and diyers who are comfortable with minor (and not so minor) electrical work.
I am waiting to see how the public/govt/media react to the reality in January, to see what line I'll take. Most of my customers would take the view "I'd rather have you working on the electrics than someone I don't know". I guess that will go for the majority of tradesmen who have a customer base.
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