BSmith,
Found this (before madkayaker's post came up). It seems to suggest a lesser horizontal distance (0.6M), unless I am reading it wrong?
http://www.diydata.com/electrics/bathroom_electrics/bathroom_electrics.php
Graham.
only if you want to fit a lovely outdoor rated light switch in grey plastic
thats what im saying your standrd light switch has no Ip rateing
the diagram is not showing zone 2 very well. when you add the zones up you get to 3m (old zone 3) that is the point you can fit normal kit. toilets are different and as long as its not in the bol or under cisten your good to go