The BBC's Deputy Political Editor, Vicky Young, asks the first question from a journalist.
Can the PM tell us how bad he expects hospitalisations and deaths to get after 19 July, she asks, when restrictions are lifted.
"Obviously we have to be cautious," the PM says, and look at all the data.
"We always did say there would be a third wave" of the virus, he adds, and "sadly more deaths" - but the question people have to ask themselves is if we don't go ahead now, when the summer firebreak and the school holidays are coming up, then when would we go ahead?
The virus will have an extra advantage in winter, he says.
Asked if he will continue to wear a mask, he says it is about a move to personal responsibility. There is a big difference, for example, between a crowded tube train and sitting late at night in a virtually empty carriage.