NHS crisis: 20 hospitals declare black alert as patient safety no longer assured – The Guardian (2017)

More than 20 hospitals in England have had to declare a black alert this week after becoming so overcrowded that they could no longer guarantee patient safety and provide their full range of normal services.

https://www.theguardian.com/society/2017/jan/11/nhs-crisis-20-hospitals-declare-black-alert-as-patient-safety-no-longer-assured