This was quite interesting from the guardian:
Boris Johnson remains in St Thomas’ hospital “for observation”, with No 10 saying he had a “comfortable night” and is “in good spirits”.
Downing Street is not denying that the prime minister received oxygen treatment last night. Officials are refusing to give any further update on his condition.
When asked if he had pneumonia, the spokesman said any change in his condition would be made public. No 10 is no longer describing Johnson’s symptoms as “mild”, but confirmed he has a temperature and a cough.
The PM remains in charge but the daily coronavirus meeting was chaired by Dominic Raab, who will continue to do so while Johnson is absent.
Raab is still working from the Foreign Office, rather than Downing Street. Johnson is continuing to work through his red box of papers and No 10 is following infection advice in relation to the box.
There will be no cabinet on Tuesday, instead the daily coronavirus meeting will replace it.
Johnson went to hospital by private car but No 10 refused to say what type. It was his first visit to hospital since falling ill.
No 10 insisted it had been “transparent throughout” despite having claimed up until Johnson’s admission that his symptoms were mild.