There is a very interesting article in this week's Spectator about George Orwell's attitudes towards Catholicism:
"No one will be amazed that George Orwell disliked Roman Catholicism," it begins; "it is odd, though, that he seemed unable to leave the subject alone."
It reminds me of the argument of Alan Sandison's George Orwell: After 1984 which argued that Orwell was very much a post-Protestant. It's years since I read it but, at the time, its analysis of 1984 seemed to make perfect sense. I'm sure it's worth revisiting.