Sky News has the following text from one of it's reporters on the live feed.
It seems a plausible explanation but is also suggesting that vaccination therefore won't save the NHS from crisis. The end result, therefore, would be lockdown carrying on for longer until younger age groups are vaccinated "in order to protect the NHS".
They need to do something else then.
I've been saying similar since November but it too negative a thought for most people! Rather some restrictions would have to remain and gradually be removed as the younger age groups were vaccinated.
As we now have a more transmissibility virus the issue is worse as we open up and the unvaccinated age groups become more active.
The reality is that we will need 20-25% vaccination in the 18-50 age groups as a starting point to remove some of the tier 1/2 type restrictions and probably targeted vaccination for those with high contact levels first.
As always, there's a difference between "restrictions" generally and the sort of intolerable lockdown measures we're being required to endure again and again.
I'm quite prepared to go about my business in small groups, or even as a single household as one, whilst those not so vulnerable (including presumably myself) are vaccinated, however I see no justification for being under house arrest indefinitely once the most vulnerable have been done. If this happens I will be very angry indeed and will not forget it at the next election. I expect a real change to our circumstances once the key vaccinations have taken place.