National Insurance number
The National Insurance number is used as a reference number in the Pay As You Earn system, and also by the self-employed. It is also used in applications for Individual Savings Accounts (ISAs), to check that an individual has opened only one ISA in a tax year.
NHS Pension Scheme
The NHS Pension Scheme is a pension scheme for people who work for the English NHS and NHS Wales. It is administered by the NHS Business Services Authority, a special health authority of the Department of Health of the United Kingdom. The NHS Pension Scheme was created in 1948.