>You're right, but Switzerland is not a member of EU. ... and UK soon won't be anymore. Denmark is a better example: https://en.wikipedia.org/wiki/Enlargemen

>You're right, but Switzerland is not a member of EU. ... and UK soon won't be anymore. Denmark is a better example: https://en.wikipedia.org/wiki/Enlargement_of_the_eurozone https://en.wikipedia.org/wiki/Enlargement_of_the_eurozone And there is of course the "curious" situation of Sweden: https://en.wikipedia.org/wiki/Sweden_and_the_euro https://en.wikipedia.org/wiki/Sweden_and_the_euro