The UK is now run by a female Donald Trump
From all appearances, Theresa May is essentially the female incarnation of Donald Trump. Her policies and speeches reflect the same infusion of anti-immigrant, xenophobic, banter as Mr. Trump. She makes the same bold claims about improving trade deals to favour Britain while closing off certain trade or flow of workers, just like Trump does when he says he will slap all sorts of huge taxes on foreign made products and stop immigration, all while magically improving external markets for USA products and services. This is all total fantasy.
The UK may, over a very, very long time somehow emerge OK from all this, like when the UK is one of the few remaining bits of land that is cool and wet enough to raise crops after global warming has decimated most other arable regions. But, even then, the hordes will just come take it from you all, whether you have Theresa's newest fleet of nuke-equipped subs or whatever. The bottom line is clear: the UK is committing economic suicide in order to make a last-stand against inevitable immigration and globalization. Likewise with Trump and his followers.
Biting the hand that feeds IT
