The postman, his stout legs clad in perennial shorts and reddened by the unaccustomed sun of the past week, staggered beneath the weight of two bulging sacks as he struggled up the path to the Daily Telegraph letterbox.

I speak figuratively. All but a handful of letters these days arrive at the Telegraph as email. But, by heaven, there have been a lot of them since Friday, when Theresa May held the Cabinet hostage, phoneless, in her Buckinghamshire hideout – hundreds and hundreds of them, whizzing from the electronic Cloud like shooting stars on a mid-August night.

All are read and the Editor takes notice of them, but only a fraction can be published. And not since the summer of the MPs’ expenses scandal in 2009 has such an angry invasion force taken the Letters page by storm. For anger has indeed been their main propellant.