do you really think he would carry out the work at the risk of losing his business if it were dodgey?
if I had said he was fitting an rcd I would have been told it's unesesarry
No ivory clique, no sarcastic remarks.
I am a qualified, registered electrician. (not to found on any rated tradesmen's site, but can be found on the governments competent persons site and the electrical safety register)
I tell you the truth, when I walk through your door!
I do things correctly and safely.
I care about my clients safety, I care about their property, I care about their neighbours and I care about the visitors/guest they have in their property.
If your guy has not informed you that you require an RCD, it could be that you have an existing one, it could be they do not know the requirement to RCD protect rooms containing showers/baths or to follow the MI.
It's your shout pal, I am only sticking my nose in your business, but with your best interests in mind.