Ummm, the monarchy doesn't actually rule Britain, you do know that right?
since the restoration, Britain has been a parliamentary sovereignty.
last time a monarch ruled Britain was Charles 1st in 1649. That didn't work out so well for him.
As the Victorian writer Walter Bagehot said "the Queen reigns, but she does not rule".
so basically, i don't see how the monarchy affects democracy in Britain one bit......
just saying.