I have written before in these pages about the ways in which our politics is being changed by a widespread collapse of trust in institutions. This encompasses politics in general, the media, banks, large corporations and inevitably, to some extent, local government.

A couple of months ago, I argued that while this is often talked about under the label of ‘post truth' politics – that is, a politics in which people's beliefs are defined by emotional resonance rather than objective evidence – it makes more sense to talk about ‘post institutional' or ‘post trust' politics.