I was looking at the regs for fitting switches etc in bathrooms and can see that if one is placed behind a shower wall it has to be set back greater than 0.6m+ thickness of the wall otherwise it falls in zone 2. Does this ONLY apply to a shower wall within a bathroom, as my shower wall is the bathroom wall next to the door and I wish to place a light switch on the outside of this wall close to the door, within 0.6m for consistency with other light switch positions. Would this be allowed? Diagram below to expain.