2. Meeting others safely
In general, you must not meet with another person socially or undertake any activities with another person. However, you can exercise or meet in a public, outdoors space with people you live with, your support bubble (or as part of a childcare bubble), or with one other person.
You should minimise time spent outside your home. When around other people, stay 2 metres apart from anyone not in your household - meaning the people you live with - or your support bubble. Where this is not possible, stay 1 metre apart with extra precautions (e.g. wearing a face covering).
You must not meet socially indoors with family or friends unless they are part of your household or support bubble.
A support bubble is where a household with one adult joins with another household. Households in that support bubble can still visit each other, stay overnight in each other’s households, and visit outdoor public places together.
You can exercise or visit a public outdoor space:
by yourself
with the people you live with
with your support bubble
or, when on your own, 1 person from another household
Children under 5, and up to two carers for a person with a disability who needs continuous care, are not counted towards the outdoors gatherings limit.
There is further guidance on what exercise and other physical activity can continue during the period of national restrictions.
Public outdoor places include:
neighbourhood streets, parks, beaches, and the countryside
public gardens and grounds (whether or not you pay to enter them)
allotments
outdoor playgrounds
You cannot meet people in a private garden, unless you live with them or have formed a support bubble with them.
Im not sure re support bubble as it says 1 adult with one other adult (with kids) but maybe at some point it included couples??
But anyway by the details you are saying and not calling it your support bubble then it looks like you shouldnt have been meeting indoors during lockdown in england.
Though i get what you are saying that your family has so much contact and yet havent had it /no symptoms and yet someone has caught it with so little contact.
One school found about 30 asymptomatic kids. And also they have d&v or other non 3main symptoms sore throat or headache. Have the kids been ill at all?