Ah yes. Rufus, we know you're not a fan of non-original thought, so could you present some peer-reviewed original data on this? Otherwise of course it's best regarded as fake news, which it is.
Nick - I can't quote your post with the board in its present state but your remark that "As part of the EU we have had peace and security, higher standards of employment and environmental laws" overlooks a couple of critical points.
Firstly, the peace and security you describe is coincident with our membership of NATO, which I would suggest is considerably more of a factor in that respect.
The idea that political unions between nations are a guarantor of peace is easily debunked by a single word: Yugoslavia.
Secondly the notion that the EU's influence on employment and environmental law is a matter of perspective. It all comes at a cost. But in any case as a democratic nation we can have whatever employment and environmental laws we want; we don't need to have them imposed by foreign powers.