There were things @BorisJohnson could have announced tonight - or even 2 weeks ago - that would have made a difference.
He could have introduced vaccination for 5 to 12 year olds.
He could additionally have had schools close a week early.
And used that time for HEPA filtration & ventilation to be put in place in schools.
He could also have reintroduced distancing & street masking - maybe even FFP2 minimum masks.
Instead he chose to announce an impossible target.
It is hard to see this as anything other than a distraction from his own political woes currently - the news media will be full of what he has said & little else.
There is pressure being put on the 1922 to have him step down.
If and when it fails & thousands die? - "He tried"