The regulations are strict concerning the type of light you can use in a bathroom. Fittings should be IP44 rated (ingress of water rating) within the bathroom and IP65 + in the shower area and wet rooms. Brilliant & Great Lights could advise you on lighting effects and practical issues. They say you could use LED lighting in the bathroom as long as the mains voltage is outside the room, and that the safest mood lighting is probably fibre-optic lighting (as the light source is outside the space). Other companies you might want to look at are: Decolight Geoffrey Harris John Cullen Vaughan Designs