"[...] while the Labour left and radical architects were advocating communal shelters, central government had a firm preference for the privatisation of bomb protection. “Whitehall,” Harrisson writes, “had long declared that there must be no “shelter mentality”. If big, safe, deep shelters were established, people would simply lie in them and do no work. Worse, such concentrations of proletarians could be breeding grounds for mass hysteria, even subversion. The answer was the Anderson shelter.” That is, private shelters in back gardens, not necessarily safer, but, less likely to encourage sedition.”
Hatherley 2016, p179