I didn’t know Mickey Mouse was moonlighting as a sparky.
At a quick look items
2. I don’t believe there isn’t a double pole mainswitch in a consumer unit.
6. The sheath of twin and earth is its own mechanical protection. Unless it’s in a workshop or somewhere where it can be damaged.
12. Nonsense.
Other things, the reasons they give for needing an rcd are not valid…. And if they were, they should only warrant a C3