I'm not sure about the chance of avoiding this latest episode really, short of changing the entire response from the beginning. I also think lots of the pressure for Xmas relaxation actually came from the media incessantly going on about Xmas since October, but I do think anecdotally plenty of people I have talked to have wanted something like that as well.
I also think a sudden change in restrictions when the news of the new variant was all they could do, and I'm not pissed off with them about that, and I do find the moaning about cancelled plans for Xmas, etc. quite ridiculous and selfish in the face of 80,000 dead in this country, and likely many more before this is over. I personally wish they'd been tighter restrictions all the way through, but I recognize that is not what many people want, and they also come with other disadvantages, and I do know that it is a balance between various competing needs in society.
My thoughts from reading and listening to stuff are that this variant is really worrying them (like in March when the modelling came in a forced a sudden change) and it seems clear that Tier 3 isn't enough to control its spread, hence the growing cases in some areas despite being under that level of restrictions. I think we'll see an inevitable spread across the country in the next 1-2 months, and we'll end up in a national lockdown/Tier 4 sometime in the new year. Fuck knows about schools, it's a hill they have chosen to die on.
I think the nightmare scenarios are either (1) the vaccine/s doesn't protect against the new variant, or (2) it causes more severe illness and outcomes in some way. Or both... (I also have some concerns the vaccine take-up is going to be low, and that the rollout is going to get fucked up in some ways and be delayed in some ways...).
As an aside it doesn't even to have a higher fatality % rate to actually kill more people. If more people just get ill and overwhelm the NHS then more people will die, and/or if more people just get it than might otherwise have before we have a vaccinated population then also more people will die.
It really is going to be a very grim few months I think.