Is the UK a Christian nation?Watch
No in that, in reality, it isn't.
If it is Christian it's agnostic Christian.
Summery: Kind of a Christian country, built upon it, slowly changing. Christianity is rarely involved in the countries choices anymore.
Oh yeah, our queen is still technically "Defender of the Faith" thanks to good ol' King Henry VIII. Or so I think.
In terms of culture, England is very Christian. However, in terms of belief, we are fairly atheistic. Off the top of my head, I think that the figure of 70% of people claiming to be Christians in 2001 has since dropped to 50% presently.
It was time churches were confiscated from this particularly religious sect and handed back to the public.