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.
Social Enterprise UK
Social Enterprise UK (SEUK) (previously The Social Enterprise Coalition) is a community interest company founded in April 2002 in the United Kingdom. It functions as the national membership and campaigning body for the social enterprise movement in Britain.