We are nowhere near these systems in so many areas it’s just ludicrous to think we can exit the EU in April 2019.
But I think it may be worse than that. After forty years of being in the EU I think we may find that the demand of creating independently what was previously possible only because it was shared may be insurmountable, as well as being beyond the capacity of our economy because the costs will be so great.
At sometime this realisation will dawn. Then, as I said in a tweet yesterday, someone in politics is going to have to realise that we just can’t leave the EU: it’s simply not technically and economically possible for the UK to replicate its systems, let alone in any way that gives us anything but a massive diseconomy of scale.
Those who would rule us are insufficiently competent to even negotiate our way out of a treaty.
But, still, of course, they should have greater power over our lives.