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.

What happens in the next three months, perhaps even the next couple of weeks, is going to shape the fate of the country for decades. If Brexit goes ahead, in any form, it will enact a profound misreading of the nature of the contemporary political and economic world and represent an unprecedented failure of British statecraft.