I met up with a group of 6 friends the other day in one of their gardens. The chairs were a metre apart - measured exactly with a metre stick. In actual fact there were 7 of us, as a husband and wife came (and dog) but they counted that as 1. I went to my g.granddaughter's 2nd birthday a couple of weeks ago and there were 14 of us from varying households. My grandson and his wife and the birthday girl, his brother, his mother and stepfather and both sets of grandparents. Her parents, her grandmother and her sister and partner. Plus 3 small children not counting the birthday girl. I think they decided because her parents, sister (and family) and her grandmother all live very close to each other and are in and out of each others houses all the time, they would count that as one group, our grandson's mother, stepfather and brother as another group as they visit frequently too, and my OH and I and his other grandparents as 2 other groups. Anyway, we all sat in the garden, well spaced out and had a lovely time. No-one has become ill since. All that happened was that my grandson's partner, who was 40 weeks plus 5 days pregnant went into labour after we'd all gone home and had a son at 11.25pm. She really didn't want her children to share a birthday, but the baby arrived 35 minutes too early to have his own birthday.