No you didn't Zacs. I was just explaining that I wasn't trying to be.
This thread reminded me of something I posted a long time ago.
https://www.theanswerbank.co.uk/ChatterBank/Question1654249.html
It got quite a few comments (including some witty responces from yourself.
royfromaus, The circuit will have been wired in twin and earth (the electrical tester has a duty to inform the client if not)
And as the Wolf has stated 'The problem areas are the hallway and two bedroom' (Other points are ok) Therefore the circuit has lost its earth (cpc) along the way. (usually at a junction box hidden in the void) as the cables don't go direct to the fittings.