Rule '5'
It is only an opinion that the CAA legal beagles (rockweilers) promote, not an established legal fact. I have, over and over again, witnessed CAA legal representatives try to convince the court that flight lower than 500' AGL is the issue, which it is clearly not. Not yet seen a Magistrate who fell for it either.
While it is possible to carefully select the place over which a PFL is practised in order to not wind up the local folk or their animals, I think it would be difficult to argue that such a practice should be exempt Rule '5'. There is always somewhere without a; person, vehicle, vessle or structure (field boundary fences don't count nor does a person akip in the middle of a corn field)
However, to say that the much more postion specific drill of EFATO training being given to a pre-solo student must surely be in accordance with "normal aviation practice". Indeed much of a Pilots later training qualified or not will be in accordance with such a normal aviation practice. If ever the CAA attempt to proscecute a Pilot following a EFATO I'd like to witness the que of us just waiting outside the door of the court to cry simply, "of course it bloody is!".