I wouldn't agree with that, you know. The Church of England is essentially a political institution and there is a long-standing tradition in the Commons that if you mention the man upstairs you get nudged down the hall (i.e. to the Lords) and out of office.
The U.K. is very much a secular society... and 15% or so of the population are atheists according to the last Census, I believe. If you factor in agnostics then I imagine the number is much higher.