Well, I don't bite so easily, nor am I a lady, and nor do I spend all my time on here moanin and whinin - sorry
On here, and in other forums I occasionally delve into I do try to help people with less knowledge to sort out their problems where possible. I myself have had help online from other trades to accomplish my DIY, so I try to pay that back. My stock answer isn't "Call in a sparky".
What you are doing is shooting the messenger for news you don't want to hear. OK, maybe some of the posts could have been put better, but I still think that if it wasn't what you wanted to hear you'd have gone off on one no matter how well it was put.
Things have changed, and that's a fact that needs to be accepted. Part P isn't that popular amongst electricians either FWIW. 5 years ago any man and his dog could wire a property however they liked, and it was common for builders to do it themselves. There was no need to certify the electrics, so that was often how it was done. But the law has changed, and it is required by law to have the electrics signed off by someone competent to do so, and there are requirements to be met in who is competent to sign off work, and what they can sign off. Neither you or your builder has the competence to do it, and it is very unlikely that someone with the required competence will sign it off for you simply because he cannot - see above re self certification. Sorry, but that's how it is - maybe we could have broken the news better by sitting you down with a cup of tea and a nice biccy?
OK, why is it necessary to have it signed off properly. We had a new kitchen extension done 10 years ago with the electrics put in by the builder. And to be honest, like your guy he was good at building work. However, as we got more appliances we started having problems. We couldn't have more than one or two appliances running without the main RCD tripping intermittently, one of the sockets started to get hot even though nothing was plugged into it etc. reason was that all he'd done is to take a radial off of a socket. At the time I guess it was common practice.
WHY is this a bad idea? Take the case of dishwasher, tumble dryer, washing machine plus kettle running off a radial that is only really designed to have 13a via a fuse on it. You are probably using best part of 25 - 30 amps if they were all using maximum power at the same time. In any case it represents a serious overload and no wonder the plug was getting hot. A fire risk in fact. When I revamped the kitchen recently I put in a separate ring. We can now use the appliances without tripping or anything getting hot. This is just one personal example - I can quote many more, and so can everyone else here. So long short and tall of it is that eventually part P became law, and we have to abide by it - like it or not.
The advice we gave to find an electrician willing to let you be labourer and teach you at the same time was good advice. You can save money and learn. There are electricians that would do this for you - I for one would. But to be brutally frank, with your attitude I wouldn't do it.