Cromwell and the Telegraph are right in one thing.
If the threshold for new restrictions is 400 Covid admissions, as opposed to admitted and later diagnosed as infected, then we would need to see some 9x more Covid hospital admissions, based on that 21st day figure, before new restrictions come into play.
Whilst it is hard to get solid data on admissions, the one figure I have seen recently is a 50% increase in hospital admissions.
We would then need to see over 17 times the growth already experienced by Omicron so far and that is not supported by these data.
In short no action until we see whether massive numbers of Omicron "new" infections drive up admissions far more than the previous Delta cases did, based on the tripling of cases.
It will take at least 2-3 weeks to really prove this out, but the current trend does not support any further action at this time.
Especially as no country has shown Omicron driving up hospital admissions faster than Delta. In fact a 3x increase in cases created a 50% increase in admissions.
Based on these stats we'd need to hit around 650k cases per day to hit that 400 daily admissions.
Hence we Really need good stats and this is the very worst time of year to get them.
I do note, however, that the reintroduction of masks has, as shown by the massive increase in numbers, done zip.