I and a few other posters talked about this a bit last year.
www.mumsnet.com/Talk/coronavirus/3895610-The-probable-reason-why-deaths-are-so-slow-to-fall
A few people have tentatively started mentioning it again now.
www.mumsnet.com/Talk/coronavirus/4132111-Tighter-restrictions-What-else-can-be-tighter?pg=5&messages=100
Is it time to reconsider? The evidence seems to suggest that it can enable the virus to be controlled with fewer restrictions on all other activities.
LangClegs posted a striking image showing where transmissions seem to be coming from. It perhaps gives us a hint of why lockdowns have not been as successful as was hoped: yes, you can reduce the transmissions between households somewhat, but then you've got people in the same household basically breathing all over each other all day long. Sharing toilets especially may be a big risk factor, yet a huge percentage of households in the UK have only one toilet per family.
Does the level of crisis in the UK right now perhaps merit a rethink? The UK really cannot afford to furlough more and more people and close down more and more of its economy, and the arguments here just seem to be going round and round in circles, because every "tightening up" measure seems unaffordable or will crash the economy. Centralized quarantine (= people watch TV in a peaceful environment and eat meals left at the door while they recover) could greatly reduce the level of lockdown that's required. There are ways to handle family situations sensitively to make sure children are not separated from both parents.