It is a big yes yes actually - "parents are able to form a childcare bubble with one other household for the purposes of informal childcare, where the child is 13 or under".
Either you suffer total financial destruction and are out of the streets starving or the grand parents care for the children as schools are closed so the parents can work to pay the rent or mortgage. Of course the grandparents will mind the children and it is 100% lawful too.
I see £30m of one week of school dinners will be thrown away due to the announcement. Too perishable and short notice for food banks too.
Truly indeed have we found the magic money tree.