@ShootsFruitAndLeaves
The not-for-profit whose figures you quoted is actually a lobby group for critically ill people in hospitals.
The stats they publish are reported only, no qualification at all is done.
I'm afraid that, as they have a clear political agenda, their figures cannot be stated as being free form bias.
As their figures differ so markedly from the actual figures published from official outlets (PHE, ONS), I'm afraid I place little trust in them.
The actual recovery rate once in hospital (for the general population) is very poor, but one would expect the bar for admission to be far lower as he is the PM, and correspondingly the chance of recovery to be higher.
Poor man, I hope he makes a full recovery.