I don't think people fully understand what has happened with covid-19.
Italy was not badly affected. What was badly affected was the north-west and some neighbouring regions. Rome, or the South, for example had very little.
So 'Italy' was never overwhelmed.
The deaths in Lombardy or New York are essentially the worst-case scenario. We got close in London, but London has massive capacity, better infrastructure, more overflow possibilities than Lombardy.
In England & Wales there are three main hotspots, which are London, Manchester/Liverpool, and Birmingham Urban area. There are also warm spots in the Lake District, Middlesbrough, Cardiff, Gosport and others.
The Nightingale hospitals were built to deliver services to densely populated urban areas. Nightingale Harrogate is in N Yorks but is catering to Leeds.
The others are Manchester, Glasgow, Birmingham and London.
Each the largest urban areas in Britain.
The attached map shows excess deaths in hospital in the week to April 10 for the north of England. It's both colour-coded and has numbers. Red means the local hospitals may be overwhelmed.
The numbers are the actual death figures. Second map shows London. Here there is widespread red implying a serious regional pandemic.
The Nightingale hospitals are indicated where there is widespread red indicating hospitals being overwhelmed with deaths over a larger region, hence implying some value in a regional super-centre.
In the Leeds-Harrogate area Harrogate is yellow showing deaths double usual levels (for Harrogate residents, not Harrogate hospitals), but this is only 14 extra deaths in the week, while Leeds has 19 extra deaths which is only 32% above usual levels.
So the pandemic never reaches severe levels in Yorkshire.
Essentially what you have in London is close to the worst case scenario, but probably London was helped by its younger population. The government fucked up by shutting down a week or two late, so what you see is hundreds of extra hospital deaths in London, which would have been avoided by an earlier shutdown.
The Nightingale hospitals are not fuck-ups. They are an attempt at emergency capacity planning in case for example West Yorkshire had become as bad as London, in which case there was likely to be limited excess capacity. This scenario was possible since we didn't know the extent of spread at the point they were commissioned.
Now that there is no possible mathematical way for the virus to overwhelm health capacity in the Leeds urban area providing we either keep in lockdown or keep testing lots of people at random across the country, it makes sense to close it.
The only fuck-up here was the late lockdown, which cost thousands of lives. Not building fucking hospitals in a pandemic! That's just sensible.