holmslaw - I dont know why you are getting so uppity, you havent even been involved in the discussion so far! Its a forum, and the question I asked was "anything in the regs that says this is not allowed", people contribute opinions and you are correct, I will do whatever I like, but I will listen to all the opinions first and make a decision.
JohnW2 - thanks for your comments, I understand all of these considerations and I am taking them into account but I dont think that regulations would need to be exhaustive to include a statement that simply said 'a consumer unit must not be fitted in a bathroom' which leads me to believe that the intention is that there are some circumstances where it could be permitted provided the regulations that you mentioned are considered.
bernardgreen - this is an interesting point, regardless of where the CU is fitted, as the room does not have any windows so I might look into some kind of battery operated light in there, even just for the possibility of the bulb failing.
JohnW2 - thanks for your comments, I understand all of these considerations and I am taking them into account but I dont think that regulations would need to be exhaustive to include a statement that simply said 'a consumer unit must not be fitted in a bathroom' which leads me to believe that the intention is that there are some circumstances where it could be permitted provided the regulations that you mentioned are considered.
bernardgreen - this is an interesting point, regardless of where the CU is fitted, as the room does not have any windows so I might look into some kind of battery operated light in there, even just for the possibility of the bulb failing.