I looked this up for the second time last night, and it is clear that it is allowed to be in a support bubble and a different bubble for childcare. It’s all on the government site and not difficult to find. As suzie says, it’s up to individual families to decide what is as safe as possible for them. No individual or family is 100% safe unless they choose to completely isolate at home and never go out at all. Even then food and post will need to be delivered to the house, although it has been said that it’s highly unlikely that anyone will catch the virus from shopping or deliveries. Nonetheless I cant stop myself from wiping off the shopping with an antiviral wipe.
This lockdown is a bit less severe and people are able to decide for themselves how best to manage the situation.