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".
Supplemental Security Income
Aged – Being deemed aged consists of attaining the age of 65 or older. The Social Security Administration, like the United States Government in general, follows English common law and considers a person to attain an age the day before their birthday.