The short answer is we don’t know. It is all very odd. I’ve tried to contact Downing Street this morning to get clarification – and no answer.
I can only surmise that it is a health issue and they are calculating whether Mr Johnson is up to it.
Although we saw him give that statement on Monday, it was only six minutes and Prime Minister’s Questions is an entirely different occasion. It is not the bear pit it normally is because it is a virtual Prime Minister’s Questions.
Nevertheless, it is an hour long and to remain on your feet answering questions for an hour is a significant physical ordeal.
I imagine Number 10 is calculating whether to risk it because it will be broadcast and they would not want the PM to be seen having difficulties.