He told the newspaper that he realized he was a Satanist nine years ago when he "stumbled across" The Satanic Bible by American 'Black Pope' Anton Szandor LaVey. "I then read more and came to realize I'd always been a Satanist, just simply never knew."
Just like to point out, LaVey's Satanic Church does not actually worship Satan. It believes that everyone is their own god, and that the laws of Christianity go against human nature. (Which I agree with, but I'm not a Satanist.) I'd like to read that book. Except that seems like if you had a revolutionary, important idea that you would like to share with others, the best way of presenting it is probably not by calling it "The Satanic Bible" and calling your religion Satanism, even if it is anti-Christian. But ya know, that's just me...
Anyway, cudos to the Royal Navy for allowing religious freedom!