Another article about the potential link between overcrowded housing and Covid-19 spread. We do have the smallest average house sizes in Europe. This takes us back to the Victorian origins of the planning movement as about health... https://www.theguardian.com/world/2020/apr/12/virus-hitting-hardest-modern-equivalent-victorian-slums?CMP=Share_AndroidApp_Tweet

Just to add, in mentioning house sizes, we understandably think about national space standards. But for overcrowding, standards under the Housing Act 1985 apply. They're very low standards, yet many households are still overcrowded. A recent publication:
http://researchbriefings.files.parliament.uk/documents/SN01013/SN01013.pdf