It's not the fact that LABC's & Schemes are making a lot of money out of part P. Part P was pushed through as a Kneejerk reaction to an accident (Yes we know it's become a hugely profitable cashcow for some). It was, according to the government going to improve safety in Domestic electrical work.
Well as most of us said at the time, it Doesn't work.
An example: A friend rang this morning & asked if I'd take a look at the wiring in his bungalow, 2 problems:
1) When they turn on the shower in their 2nd bathroom, it trips the RCD.
Shower was installed 6 months ago but not used as bathroom needed
tiling, decoration & a rad fitted.
2) They just took down the glass shades on kitchen lights that were fitted by the same sparky & found bare wires.
So I went & had a look, couldn't see any signs of a DP switch anywhere for the shower, so asked why there wasn't one.
Answer: There is 1 but it's in the garage, he couldn't get into the bathroom ceiling so fitted the pull switch there as it backs on to the bathroom. So to use the switch you go through the house (5 doors) go down the side alley, across the back yard & into the garage.
The tripping is caused by cross connection in the CU.
When I looked at the kitchen lights, the was about 6 - 10mm of bare wire sticking out of each terminal.
No Heat resist sleeving on L / N wires but this had been used instead of GY sleeving to cover the earths.
Each light is attached to the ceiling with a single screw.
The butcher who did this is Part P & NIC registered, this is just 1 of the domestic butchery jobs I've seen since part P. Improved electrical safety ? I think not.