Luckily, not my responsibilty, but these are the figures provided by Imperial College London
https://www.bbc.co.uk/news/explainers-51632801
"The idea was that by pushing it back to the summer it would allow the NHS to cope.But modelling from Imperial College London prompted a change in approach.
It warned the policy of a managed spread could lead to more than 250,000 deaths, with hospital intensive care units getting overwhelmed.
Ministers are now seeking to suppress the spread completely.
They hope this will keep deaths below 20,000."
For those who don't know, all pubs, restaurants, cafes, leisure centres etc have been closed. Schools have been closed, except for children of key workers, who, it turns out, are people like doctors and nurses, not the investment bankers and such. Anyone in the at risk group, about 1.4 million plus elderly, is told to stay at home except for vital trips, to buy food etc, and everyone to maintain distancing. I suspect that within the next week, staying indoors will be enforced, at least for London, as it is in Paris and other places. I have been staying in for at least a week already. It was announced it would be proposed as from today, and I saw little reason to wait. Although I live near a city, it is quite small and the county itself is largely agricultural, so I can quite easily manage a walk without getting too close to anyone.
Meanwhile the supermarket chains are calling for more workers, NHS staff are being brought out of retirement. The talk now is of the "exit plan", different to the "Brexit" plan, but like that, I'm not sure there is one.