I think there are implications to be considered in addition to hospital admissions and deaths, if the cases increase a significant amount.
The current requirements for self isolation surely would have a large effect on workplaces due to staff absences - everything from the Royal Mail sorting sites, supermarket workers, carers, NHS staff, teachers - the list goes on and if a high proportion of workers are absent, this has an effect on the whole population surely? Education, healthcare, food chain supplies, home deliveries, post....
I also strongly believe self isolation has a huge effect on family incomes and this needs addressing. If it's a choice between receiving your wages on Friday and buying your DC food, or alternatively self isolating and not receiving your wages, or losing your job - people won't self isolate and I fully understand that POV.
(I know about the £500 payment scheme, it's insufficient for lots of reasons but I don't want to derail the thread!)