UK Government Data Standards Catalogue

Metadata Value
Data Element

National Insurance Number

Is Part Of
Person Identifiers
Has Parts  
Version 2.1 
Status Release 
Previous Versions  
Later Versions  
Date Agreed 1 September 2002
Name

National Insurance Number

Description A reference number that is issued to a person by the DWP/IR for participants in the National Insurance Scheme.
Business Format 9 Characters
Element Type Data Item
XML Schema
View whole schema document Citizen Identification Types as XML
View definition NationalInsuranceNumberType as HTML
Validations
1. Must be 9 characters.
2. First 2 characters must be alpha.
3. Next 6 characters must be numeric.
4. Final character can be A, B, C, D or space.
5. First character must not be D,F,I,Q,U or V
6. Second characters must not be D, F, I, O, Q, U or V.
7. First 2 characters must not be combinations of GB, NK, TN or ZZ (the term combinations covers both GB and BG etc.)
Value
DefaultValue
Owner Department for Work and Pensions and Inland Revenue
Based On Department for Work and Pensions and Inland Revenue
Verification
Comment
  • Schema fragement does include validation number 7