/me refers JE to the Treaty of Paris, ratified in 1784 by "the most serene and most potent Prince George the Third, by the grace of God, king of Great Britain, France, and Ireland, defender of the faith, duke of Brunswick and Lunebourg, arch-treasurer and prince elector of the Holy Roman Empire etc." and binding upon "himself, his heirs, and successors." That would include the current Queen and, I believe, her subjects.
The operative phrases in the treaty are "free sovereign and independent states" and "perpetual peace and harmony." It is an educational read.
Saluting the UK and the British Commonwealth in perpetual peace and harmony,
-- tsreknor