[Margaret Pilkington]

There hasn't been(to my knowledge anyway - maybe it happened while I was asleep) any country which has had a vote/referenda as to whether to stay in or leave the EU.

There have been referendums about accepting the fiscal policy...or different treaties....and countries who have voted against the wishes of the EU have been sent away to vote again...until they come back with the right answer(one that is accpetable to Brussels).
Democracy is not being served by the EU. neither is trade....which was the banner under which the EEC(later to become the EU) was floated.
The EU and the single currency were never about about free trade, it was always about politics and the forming of the Federal states of Europe.
This failed as the USSR.......which broke up into original state...there is no reason why the EU cannot do the same thing........and if Greece exits the single currency(which it surely must) then it will be the master of its own fate...it can do back to the Drachma, set its own financial course. People will flock there again for holidays, greek products would become cheaper and therefore more attractive to buyers and the greek economy could once again stabilise, and after a time flourish.
Wouldn't that be a smack in the kisser for Germany?