I just never got why the British are in it, block all measures that could lead to more democracy and then criticize the E.U. for lacking democracy.
Now don't get me wrong, a lot of things about the E.U. are messed up, France's hypocritical stance for example, but the British people and their politicians obviously don't believe in the idea behind it - however vague it is.
A trade union could be set-up without a problem.