Re: Glad they didn't overthink the process....
Sark is a Crown Dependency, it was never part of the UK, so it's not moved out of the family house.
It was part of the Duchy of Normandy, when the then Duke, William, claimed the English Crown in 1066, it came with him. The current Duke of Normandy is the Queen, hence why, as with other Crown Dependencies, she gets to give assent to any laws, which is ultimately done through the Privy Council. The right to be a self-determining began with the Royal Fief being granted in 1565, though it wasn't until 1572 that the then Seigneur was allowed to make his own laws.
It's a separate jurisdiction, we are autonomous and we have our own UN country code, 680 if you're interested.