Yes.But you were referring to someone else when you wrote...
I'll try it again, and use other terms as well, all of which mean the same thing.
1) In my world you do.So Bas, you don't need to be 100% sure of compliance, regulations, or anything else for that matter.
2) As far as I am concerned you do.
3) Yes you do.
4) According to the only valid principles which people should follow you do.
If he were absolutely ready he would not need to ask the questions he did.Not at all cut and dried. Far from it. The O.P. is absolutely ready to head down the Building Notice route. Wrong yet again Bas.
Ergo he is not ready.