I hate the b***dy things and would replace it with a wall one outside the
bathroom - if necessary.

I'm the same way and did exactly that in my last house.,

However, in some cases, it may now even be permissible to put them on the
wall inside the bathroom. Unfortunately, this isn't the case on my new house
(too proximate to the bath), so it will gain an outside switch at some
point...

Christian.