The areas round bath or shower are still prescribed in great detail- scary thing is (according to the pretty pics in my On Site Guide-17th Edition) I can put a standard wall switch just above a washbasin and be completely compliant (as long as the basin is far enough away from the bath or shower). Given shortage of cat-swinging room in the shower room I'm doing at the mo it's going to be a pull switch (ceiling is 2400 so hurrah) with the FCU for the fan next to it.