Good clip, Ed :) As a republican atheist myself, I would like to thank AoG for thinking about my stress levels, but would like to reassure him that I am intensely relaxed about the whole process. No appetite in the country for doing away with the Monarchy it seems, so no sense obsessing about it ;)
As for this question - I thought it quite an interesting one, and. whilst not strictly a news item, it is germane in the sense that a one-day ruler is being baptised today, and that is in the news.
I cannot see it actually happening mind, but presuming George did decide to profess an atheism, to never buy into the faith, and were uncomfortable about being labelled head of the CofE and "Defender of Faiths", it would be interesting to see how, constitutionally speaking, the country would cope :)