I've not read anything to suggest that the new varient from Kent affects the age groups proportionally any differently from the older strains. There is no scope for locking down until the younger groups are vaccinated. They will have to change something (not just schools).
I'm not advocating that lockdown measures should be kept until the young have been vaccinated, I'd argue for exactly the opposite (as a young person myself).
But not doing so could create some
very interesting discussion
if young people are now being more adversely affected by the virus in terms of hospitalisations than before.
Government to the young: Lose your youths to save the lives of older generations, and be saddled with the debt that results for the rest of your lives.
Also: We've vaccinated those you lost your youths to save, and now they're all safe. Even though it now seems more of you are becoming very ill from this virus, we're now going to "let the virus rip".
I hate that phrase - and I'm only using it facetiously....
(the above is also not my opinion, but an arguement that you could very feasibly see coming about)
Not a difficult path to be treading, and I really don't see how the government can come out of this smelling of roses, whatever route they go down.