I'M sorry but i disagree with the NICEIC are not helpful, i'm in the NIC and the ECA (the ECA own ELECSA)
and not only find the NICEIC very helpful but also help me win alot of work. For example when the part P
came out, not once have i been asked if i was part P, but asked if i was NIC instead, as the consumer knows of the NICEIC alot more than any of the others, hence members of the others being on a back foot straight away having to explain they are Part P but not NICEIC.
It makes me laugh because the niceic is no harder to be a member as elecsa or napit and is the same price for domestic installer, dont get me wrong i wish it was harder as it would have even more prestige about it.
And as the other guy says about catch 22, its easy like robsparky says do a cu for a friend/family test it correctly with the correct paper work, then put an outside socket at your own house as a second job makin sure both jobs are done to the current bs7671 and heypresto you could be signed up with the NICEIC lol.