The government have always said it's about bringing the R rate down and protecting the NHS
No they haven't, they said that initially, and then despite the R rate being very low, and no community infection, immediately swapped to an utterly failed eradication policy, running at "not overwhelmed NHS" throughout the summer would've been a very different strategy to what was done.
With the amount of fear the government have pumped into the system, lots of people will not be willing to live with a circulating virus, so the media and government will continue to restrict and rant against "rule breaking" even if all at risk people are vaccinated.
And as we see in this thread, people asserting that non at risk people need to vaccinated against it, saying it's to protect those who can't be. Now covid isn't flu, but flu without a vaccine is often more of a killer (and it kills young kids too, which covid doesn't), yet no-one has yet demanded people take the flu vaccine to protect others.
For the under 10's chicken pox is more of a killer, yet we don't vaccinate against that.