The UK’s historic decision to end its 43-year love-hate relationship with the European Union represents a turning point in British history to rank alongside the two world wars of the 20th century.
On the assumption there is no turning back, or collective buyer’s remorse, Britain will live with the political, constitutional, diplomatic and economic consequences for a decade or more.
The pin on the atlas marking the UK’s place in the world has shifted, just as the centres of power in the UK polity. All the familiar points of authority in London society – Downing Street, big business, economic expertise, the foreign policy establishment – have been spurned by the equivalent of a popular cluster bomb.
So what happens next?