^*The new DfE guidance also states that, as much as possible, children, young people and staff “should be spaced apart at all times”.
This means:
sitting children at desks that are far apart
ensuring everyone queues and eats further apart than normal
keeping apart when in the playground or doing any physical exercise
visiting the toilet one after the other
staggering break times
putting guidelines on the floor in corridors
avoiding unnecessary staff gatherings^^
*^

I wonder if the person at the DfE who wrote this has actually set foot in a 2020 primary school? My classroom is barely big enough to squeeze in the 30 Y2 children I have and they're pretty small. Many schools, my own included, had to expand as numbers of pupils went up. We went from 1 to 2 form entry. Leading to very small classrooms, not enough space, tiny corridors, ridiculously small hall....
I would love to go back before Sept for all of the reasons already mentioned but only if this has been very carefully thought through. I'm not holding my breath...