Why the 21 June unlocking will probably not go ahead
The Prime Minister’s roadmap rules would logically dictate not moving to stage four of lockdown easing on 21 June, but delaying by two or four weeks – because the increase in the R transmission rate to more than one is driven in part by the stage two and stage three easings and not just by the greater transmissibility of the Delta variant. As Nadhim Zahawi said on the Peston show last Wednesday, the more significant characteristic of the Delta variant is that one vaccine dose is not terribly effective against it, though two doses provides decent protection. And that good protection kicks in two or three weeks after the second