But even if you "look at data" you still have to decide what data satisfies you that the time is right. >100 deaths a day? >50? >10? Or go by hospital numbers, or prevalence in the population?
I don't think anyone can make a very strong argument for any particular threshold, other than perhaps those related to hospital pressure.
For me I think it therefore has to somehow take into account what most people seem to be prepared to put up with. That's obviously something the govt will be trying to judge and make a call on. My feeling (which can never be an accurate or objective measure) is that "most" people are now moving towards a position where they don't think compulsory restrictions are appropriate. Obviously this could change if the numbers started going in a different direction.
I'll share my thoughts gradually rather than end up doing some really mammoth post.
In the longer term I am more interested in whether there are any permanent changes to the culture of working when ill, the amount of sick pay we offer in this country, and whether forms of mass testing are used to tackle other common illnesses so that we have a 'test not guess' system that could both improve public health and reduce the burden on the NHS.
I say this now because the talk of changes in March relates to the law, and that isnt the only aspect - guidance and advice also influences the behaviour of a fair proportion of the public. And people may be surprised at just how much we initially (and briefly) relied upon guidance as opposed to formal rules with consequences.
For example, take a trip back to February 2020 and marvel at how self-isolation guidance was initially presented:
The official blog of the UK Health Security Agency, providing expert insight on the organisation's work and all aspects of health security
ukhsa.blog.gov.uk
Then note that much of the formal stuff and fines relating to self-isolation was done in September 2020, in conjunction with mass testing, a test & trace system, and some payments for some people forced to self-isolate:
From today, people in England will be required by law to self-isolate if they test positive or are contacted by NHS Test and Trace.
www.gov.uk
Obviously that isnt the entire story of these fronts in 2020, we ended up with a bunch of other rules in March 2020 and a lot of those were focussed on much broader lockdowns, and we lacked the capacity to actually test the masses during the first wave. And there are other bits of the history that I havent looked up yet. eg I expect there were self-isolation rules of a vaguer sort for a period of 2020, relying on symptoms rather than formal testing.
But certainly at this stage I expect a bunch of guidance to remain after March this year, and that guidance will feed into what peoples sense of 'the right thing to do is'. Obviously I dont have high hopes for how high a priority the UK establishment will put into changing work culture in regards illness, or properly funding peopel being in a position to always do the right thing. But I dont expect all of this stuff to toally vanish in March, but it will move to a different phase and the extent to which a mass tst & trace system remains will influence the other details.