When will they move on to blended learning or their contigency plan?
I'll answer that, the answer is never.
It was a stupid idea that would never work. They dumped the idea on schools before thinking it through.
School Buildings, if you fill the school with socially distanced kids what do you do with the Keyworker/vulnerable kids who need to be in school 5 days?
The plan was to deep clean the schools between bubbles of kids again what do you do with KW / vulnerable kids?
I did consider they could use sports centres but they'd need to add heaters for kids sitting rather than a system designed for people running around. They'd need to sort canteen facilities. And not all sports centres have a secure outdoor space for kids to play.
Part time school and KW bubbles also means you are exposing kids to more than one bubble increasing the risk for the virus to move between bubbles.
Teachers; they'd still be exposed to 30 kids at a week, however many in secondary schools. So you aren't really reducing their risk. How can a teacher teach 15 kids in front of them and 15 kids at home at the same time?
Who looks after the KW / vulnerable kids?
I did consider they could be looked after by sports coaches who have clearance to work with children but there's a huge difference between a sports coach and teachers who have knowledge in dealing with vulnerable kids (kids with ASD, in care homes, kids in abusive houses, etc) and the many issues that these kids face.
So bottom line blended learning won't work.