I've just teamed up with a kitchen fitter, he feeds me regular jobs, this is for a big shop, Let's just say if you would some wire round a nail and put some voltage over it you would find the shop.
anyway, he explained to me the other day how it works, he is given the job of fitting the kitchen, and a budget to get it done, then it's up to him to source a plumber and spark etc, all the paperwork he showed me seems a lot of hassle to be honest.
I suppose i dint don't mind doing it as I know that the work I am doing is all to a good standard, but I know where the relationship will fall apart, it's when he says can you put a couple more sockets in and I turn up and say something like there's no RCD and solid green bonding or something, I'll say well that needs dealing with and he will say I just want the sockets, and I'll leave him hanging when he doesn't want to do it as he didn't factor things in that he doesn't understand and so on.