Where does one start with MissedTheBoatAgain's stuff?
Much has already been said which says it as well as anyone.
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What United Kingdom though? A riddle for you MTBA, is what way does the UK I was born into differ from the one my father was born into? A clue - looking at a map of England won't give you the right answer.
Fault lies with UK Government for;
Allowing a remainer to head the task of taking UK out of EU
NO. Fault lies with the Tory party for Cameron running away when he'd promised to implement the result, although he never promised how. Fault then lies with the Tory party for the choice of prominent Leaver put up - but this wasn't entirely their fault, because the obvious other old Etonian, Boris Johnson also ran away. So they were stuck with Gove, who didn't get enough votes and by his own admission, wasn't PM material. And Leasdom, remember her? Who stuck her big foot in it going on about Theresa May having no children, and was forced to withdraw. So then May appointed Davis - a Brexiter, who barely bothered to attend EU meetings, went without any papers, and left early. Then there are those other fine examples Rees-Mogg who never accepts Office in Government, but has made sure he's moved his business funds to Dublin. Deadwood Redwood, something of a has been now, who advises not investing in the UK but in France and Germany. All people of the 'easiest deals in history', 'all settled in an afternoon','they need us more than we need them'.
You voted Leave so none of this '"it's going to be difficult, it's everyone else's fault." You wanted it, it was up to you and fellow Leavers to say what you wanted - get writing to your MP, start telling them what it is you want. Oh and BTW - do learn a bit of basic Geography and History. Your ignorance makes Leavers look a bit thick.