With Boris Johnson in hospital with coronavirus, what kind of leader could Dominic Raab be?

If he is wise in the role, Raab will be collegiate, acting more as a cabinet chair than some sort of generalissimo, writes Sean O'Grady

Foreign secretary Dominic Raab is the designated acting leader of the country if Boris Johnson is incapacitated (PA)

It is an odd business when the most insightful remark about the prime minister’s health comes to us via a tweet from Sarah Vine, the well-known newspaper columnist and wife of one Michael Gove.

“Boris has worked non-stop throughout his illness – and now we see the result,” she warned.

We also know, via the political correspondents, that Boris Johnson had a “non-emergency admission” to hospital before being moved to intensive care on Monday night. Not enough is known about Covid-19, even by doctors, to speculate upon it, so what we need to work out what to do next – and who should decide it.