news.sky.com/story/covid-19-pms-winter-plan-at-a-glance-what-to-expect-when-lockdown-ends-12138882
Just read this and they are talking about temporary bubbles being allowed for the relaxation days over Xmas - possibly up to 3 households. I guess creating new bubbles and those people being the only people you see reduces risk but likely means some tough decisions across families.