There are, according to the BBC, a large number of doctors who want to be able to talk to patients about God and their faith and are lobbying the GMC to allow them to do so. Personally, I would find this very worrying.
If I was going in to hospital I would want to be able to trust the doctor has the abilities to deal with my problems. I put my faith in the doctor and years of medical training. What I don't want is a doctor giving me the impression that he or she really does not have the skills to deal with my problem and instead relies on "divine intervention". In my view, if I have something so serious that the doctor cannot cure it, then this is extreme bad luck. But if he is telling me there is a god out there and I should pray to him, my response would be why would god curse me with the illness in the first place, which leads me to the very reason why I have no faith in any god in the first place.
I hope the GMC will realise that a doctor espousing praying is akin to telling a patient to "keep your fingers crossed" and gives patients no confidence in the ability of the doctor.