It's also possible he is thinking of Philip Pullman, since he's another Oxford writer.
He'd definitely fit the profile, although I always found his books more critical of religious congregations and the Bible than belief or God as such.
My brain hurt when I went to see The Golden Compass movie (based on Pullmanís books, not that I knew it. It just looked interesting and vaguely like Narnia, HP, and all the other fantasy family movies), and my step-mom called me a bad Christian for doing so. I was even more confused after I saw the movie, because it didnít really mention anything about religion, and she LOVES Harry Potter and the like.
I finally understood once I read the book a year or so later, but I do agree with Melle about more focusing on organized religion, not necessarily beliefs. My religion aside, I wonder how much I would make my step-momís brain hurt if I told her I preferred it to HP/Narnia, etc.