On the topic of Twin + E. I have a wooden structure that is wired with twin and earth and no pipes and a ceiling with no access.
I have to remove wires, move db, and issue a coc on work done. My problem is that in half of the building, the Twin and Earth are clipped direct to the inside of the wall before it was clad. Solve the do not disturb the wires problem, but repair or replacement afterward is nearly impossible!
Also, the Twin and Earth go through holes in the wooden beams without protection.
Rewire is my first choice but accessibility is a problem and it will come at a cost.
But what about 6.4.6.2 where it says that it is ok if the wiring will not be disturbed?
Which is the best pipe and twin and earth or no pipe Also the one or two places where they used pipes no glands were used