Dominic Cummings is not Boris Johnson. Cummings proposes, Johnson disposes, and already we see the tension. We have an early indication of Mr Johnson’s caution in the shape of one of the bigger decisions a PM takes: the appointment of a new governor of the Bank of England. Sir Humphrey could not have recommended a more boring, traditionalist, establishment suit than Andrew Bailey: a name that already sounds naked without an honorific “Sir”.

In Mr Cummings’s vocabulary words like “boring”, “establishment”, “insider” are terms of abuse. Yesterday his latest blog hit the headlines: a situations-vacant recruitment drive for new Downing Street staff. It vividly confirms our caricature of a wild man anxious to shake everything up.

I have some sympathy with his hankering for