National Insurance - Wikipedia
https://en.wikipedia.org/wiki/National_InsuranceNational Insurance (NI) is a fundamental component of the welfare state in the United Kingdom.It acts as a form of social security, since payment of NI contributions establishes entitlement to certain state benefits for workers and their families.. Introduced by the National Insurance Act 1911 and expanded by the Labour government in 1948, the system has been subjected to …