delta variant causing an increase in cases, we are seeing an increase in hospitalisations.” He added: "The whole point of having an irreversible roadmap is just that, to make it irreversible, and to do that sometimes, as I've said repeatedly, you have to be cautious.
And where it's necessary to be cautious, we will be."James Ward, a mathematician, also said there was a “sweet spot” for dealing with the peak of the delta variant.
He told The Telegraph it should be dealt with over the summer by delaying re-opening, but not for too long.He said: “If we're going to have to manage another wave, the summer is probably the best time to do it.