Many of my friends are in this position. Younger adults (although not at all) who live in houseshares and are not eligible for support bubbles as they live with friends, or in some cases, strangers. Also disproportionately impacting those who are lower income and less likely to live alone.
Many of my friends are in central London, so I suppose living alone is even less likely with the steep property prices.
They're (and me) in two groups:
a) don't see partner at all or see partner for walks
or
b) disregard the no mixing rule just for their partner only
What are other people doing? Especially in light of no household mixing until May.