I gave Wim Duisenberg (former Eurobank supremo) twenty years, and he still hasn't delivered on his "the UK economy will tank in months if it doesn't join my Euro" strictures. Wasn't just him of course - the whole EUphile establishment were at it at the time. You'd almost have thought they had a vested interest in talking our economy down, but "our European partners" would never ever do a thing like that!
I hope the EU-SSR has a few more years, but from where I sit it's looking increasingly unlikely. If we can get past becoming a Caliphate (no bets on that one) the UK is now good for another 1000 years, and some of the best ones lie ahead of us.