National Insurance Number

National Insurance Number Check (NI Number)

The National Insurance number is first checked to verify that it is correctly formatted. For British citizens we check that the prefix (1st two letters) correspond to the year that the candidate reached the age of 15 years 9 months when National Insurance numbers are generally issued.

For other nationalities we check the year of issue and validate this against the start of their employment history in the UK. After the initial checks are conducted we check the candidate’s name against HMRC records.

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