Wait for you-know-who to dismiss that as "irrelevant" because somehow the EU is different......As far as I'm aware, before we joined the trading club that became the EU, we did trade with many other countries (and still do) I'm sure after reading your answers, Barack Obama is going to insist that we start using US dollars as our currency. China will no doubt insist that all communications with them are in Mandarin. Russia will want payment in roubles and Australians will insist that any trade agreement with them includes the words, "Strewth cobber" and we call all our women "Sheila's"