No Confidence in Her Majesty’s Government

I have asked many people throughout this why they voted on one side or the other in the referendum, and I have got a very wide range of replies. I have to say, though, that no one has ever told me that they voted to leave in order that we could leave the customs union, or that they wanted us to erect trade barriers between ourselves and the rest of the Europe. As the Prime Minister is as committed to this as I am, I entirely support her aim of keeping open borders between ourselves and the rest of Europe. Is it not the case that there is nowhere in the world where two developed countries in any populated area are able to have an open border unless they have some form of customs union?