How could the British monarchy be dismantled?

@DylanGuy [quote]once Elizabeth is gone.[/quote] Then what - Charlie deposed by an armed insurrection? Of course I'm joking (I think!) - But [i]realistically[/i] what COULD happen, or would be likely to?

@Really I think the monarchy will probably last another generation at least. traditions tend to die hard.
But it's very likely at some point the family will further downgrade their role in the country as the public loses interest. keeping the title but far less influence and ceremony.

It's very difficult to say exactly what will happen cause time has a way of surprising people.
at best we can speculate and come up with a bunch of different ways it could go, and then see which path it takes.

whatever happens with the monarchy, it will depend on public opinion for sure.

@DylanGuy Good answer, but regarding public opinion do you think Britain is anywhere close to wanting to do away with the monarchy? Even here in Canada I believe there's a public minority significantly large to make it politically difficult.

How would the politicians, bureaucracy and armed forces(!) be made to change their allegiance? A new head of state would be needed, with near total public support.

@Really A lot of people still look up to them and respect the position and tradition. In Britain it's very much a part of their national identity.
But most of that is held aloft by Elizabeth i think. once she passes away the people will look to the next in line to measure up, and if they can't than that would be the start of things going down hill. People know they don't really need the monarchy.
Right now Elizabeth is really the only one that the majority like to associate with and look up to, her likeness is on the currency in both Britain and Canada. She is the most recognized face of royalty and many young people either don't know who the other members of the family are and/or don't care. which is why i wonder how things will fair in the future.

so to answer your question, i don't think they are that close to doing away with it. like i said traditions die hard.
but i don't think it would surprise anyone if their reputation and influence starts declining greatly.