BETTER idea: Canada is ALREADY ruled by the British Monarchy; so the Empire should be re-established with it's capital in Ottawa, London and the UK as dominions, and Canada gets the nuclear launch codes. King Chuckles can keep Buckingham Palace as a winter residence but move to Ottawa for official purposes.
https://mastodon.social/@jkmcnk/114393486107526507

@cstross

Portugal actually did this briefly! (...albeit 200 years ago)

https://en.wikipedia.org/wiki/Transfer_of_the_Portuguese_court_to_Brazil

Transfer of the Portuguese court to Brazil - Wikipedia