Re: One down ...
(2) Britain will join the Trans Pacific Partnership with the USA and be part of this big trade bloc
That's REALLY cutting the UK loose from the Continent, but as it's a long way either around Africa or Tierra del Fuego you'd have to take good care it doesn't come apart during the journey.
(Also, would they really be taking NI with them? Wouldn't that mess with the Good Friday Agreement?)