Brexit will never be over.

Brexit will never be done. Because it can never be done. Not for as long as the UK sits 50km off the European mainland and does 50% of its business with Europe. Not when the island of Ireland sits behind it – and the north east corner of that island is contested political ground.

One of the most Blindingly Obvious Things in the history of Blindingly Obvious Things is that one consequence of the UK leaving the EU is that travel to and stay in the EU by British citizens is now different – the obvious corollary of travel to and stay in the UK by EU citizens being different, as the Leave campaign specifically demanded.