But now, public health england says the delta variant is the most widespread across the uk. the big question, though, is, what does this mean for the next step along the roadmap to reopening in england? there isn't anything yet in the data to say that we are definitively off track, but it is too early to make the decision about 21stjune. he says yet, because there's still so much uncertainty. we know this variant spreads more quickly, but we're not sure exactly how fast. scientists think it could make people more likely to need a hospital stay, but they're not certain. we know at the moment th...