National Insurance number
The National Insurance number is a number used in the United Kingdom in the administration of the National Insurance or social security system. It is also used for some purposes in the UK tax system. The number is described by the United Kingdom government as a "personal account number".
Welfare Reform Act 2012
The Welfare Reform Act 2012 is an Act of Parliament in the United Kingdom which makes changes to the rules concerning a number of benefits offered within the British social security system. It was enacted by the Parliament of the United Kingdom on 8 March 2012.