Well you are breaking the law then, I am not saying you need to notify the work just to comply to the regulations.
And the building regulations are there to prevent any unsafe installations.
It's not rocket science my friend to do a little reading in to permitted safe zones, chasing depths, holing of joists and the connection/terminations of cables, where and how any unaccessible joints can be made.
If we really went down the safety road, if you have not got approved testing equipment, to test your work against and document them for the permitted values for circuits and breaker type. You could never prove it is safe!
Therefore for sake of yourself, family, friends, neighbours, any pets or animals, I would stop now! because it does sound to me like you lack a little understanding in the task you are taking on and do not care enough to prevent any potential hazards that maybe introduced by your work.