Not quite correct ! I was previously a " resident tax payer in France " but I "officially" gave up my residence status in France when I moved to Thailand and thus became a " non resident of France " . I had already become a "non resident of the UK " previous to that . As a UK "National " ,I do of course still have the "right of residency "in the UK and before Brexit , the right of residency in the EU.
So when you state one can only obtain a Non Imm O-A from a country where one has residency status ie the EU prior to Brexit , that is therefore incorrect for myself since I officially be