Obviously, totally how long is a piece of string question, but interested in pondering. And a lot hangs on new variant and whether it stays more prevalent in spring/summer
Looks like cases will go down slowly
Vaccine won't have much impact of hospital admissions until at least late March
Unless infections rates really haven't fallen, schools get two-week warning to go back at the end of the easter hols, so they basically go back in May, and maybe only a few years initially at that
May - non-essential shops, hairdressers open, maybe restaurants and cafes with outdoor dining only, outdoor attractions. But there's no way we'll get such a nice spring/summer again so there might not be so many opportunities to go to them, 'Rule of 6' again outdoors
June - Some indoor things like galleries, museums open with limited numbers and masks, lots of outdoor 'drive in' stuff will operate over the summer. If new variant has calmed down over summer maybe 'Rule of 6' indoors with ventilation, possibly even requirement to mask.
That's about as good as it gets all summer. Holidays, no idea - everywhere may have declared us a plague pit and no entry without quarantine, some may impose shorter quarantine with testing.
Schools open September - then the 'exciting' part starts as we see how well as the vaccine works after 6 months and whether the government has screwed up by delaying second dose
End of year - possible precautionary lockdowns, eg maybe shutting schools, indoor events beginning of December (if they haven't already), maybe a rule of 6 for Christmas.
I think we have to get through one winter that is less bad than this one before much can change. I'm sadly unable to see how indoor theatre or concerts of any kind will be able to operate unless the new variant really tails off in warmer weather (if we get warmer weather)