As the Church of England was "formed" by a distant ancestor of the present monarch and she retains the title 'Fidei Defensor' (look on any UK coin - it's there as F.D. or Fid. Def), which means Defender of the Faith, I suspect we're not going to be dividing Church and State for some time yet.

OK so the title was originally granted to Henry VIII before he formed the Church of England, defending Catholicism against the new Protestant faith that was gaining favour across Europe, but it still stands.

LTS