No they don't need their own RCBO only point is they are often combined with extractor fans, shaver points etc. Where they are combined with other items electricians have to make the decision as to if they should be on their own circuit normally they are all powered from up-stairs lights but you are better checking with whoever is signing the competition cert as it is their call.
Eric
ahh well, i ran a seperate circuit up there for them today, like you say there going to have fans as well as its seperate toilet and bathroom, so it will feed 5 lights and 2 fans, may as well :)
