IMO you have just detailed why your job is attracting high quotesAll the wiring is completely exposed. We're at 1st fix, so open studwork, no plasterboard, theres no chasing to be done, nothing complicated at all and all manufacturer supplied kit. 2nd fix we would take care of ourselves.
With regard to second fixing yourself how do you intend to carry out final testing and certification once the second fix is complete
I think you will have to as no electrician is going to do the 1st fix and certify the complete jobI'll look into building control notification options, appreciate the tip.
There are various thoughts behind what Part P is about but that is a different debate.I'm not entirely sure I understand the purpose of Part P at all, either the work is compliant or it isn't, surely? It's not something I've really dealt with before, but I noticed a lot of plumbers seem to have it.
Compliant work will usually include testing and certification of the completed work as you only want an electrician to carry out the first part of the work then as you are completing the 2nd fix the final testing is down to you
It is not very often you come across jobs like this it is more usual to find a DIY 1st fix and then get an electrician in to complete the 2nd fix, testing, certification and notification