Brexit is an existential threat to Conservatism. When it fails, the party will need to ask itself some searching questions.

It is now two years since the UK left the EU single market and customs union ... However, there is no guarantee that the popularity of a policy will survive its implementation. And it appears that Brexit has not survived the test of time at all well so far as voters’ evaluations of its success are concerned.

A future leader will need to confront Brexiters in the same way Blair faced down the hard left over clause 4.

Boris Johnson’s Trumpian remarks on the “deep state” will almost certainly have a destructive effect on British democracy.