O.K., I've found a way to be able to do any work in your home without having to comply with part P and without having to notify the local council.
The addition to the Building Regulations adding part P specifies that it applies to all low- and extra-low-voltage electrical systems.
So........Just install a big transformer at the service entrance, then run everything around the house at, say, 625 volts to outlets.
Problem solved!