Edited sentence: Because of devolution, the responses by each of the four nations have differed from one another; the Scottish Government, the Welsh Government, and the Northern Ireland Executive have produced different policies to those produced by Government of the United Kingdom (many of which apply only to England).Better government support for self isolating people may be needed.Covid-19 Bereaved Families for Justice has been pressuring the government to launch a judge-led statutory public inquiry into the pandemic and the government's response to it, with a rapid review phase.Dr Alexander Edwards of Reading University stated, "Unless you can effectively support infected individuals to isolate from others and thereby break the chain of infection, testing alone doesn't reduce the burden of this disease.Johnson has said that he would support a public inquiry in Spring 2022.The National Health Service is the publicly funded healthcare system in the UK; each nation has its own National Health Service and public health bodies, funded by devolved block grants via the Barnett formula and accountable to their devolved governments.Unlike other public inquiries, a statutory public inquiry has the power to subpoena people and take evidence under oath