National Insurance Numbers – National Identity Registration Number to be entirely random

Thursday, October 8th, 2009

Towards the end of 2009 and during 2010, the first national identity cards will be issued to the general public, first in Manchester and then across the North West.  Following a consultation exercise in 2008, the Government has made a number of Regulations related to the issuing of these cards.

The Identity Cards Act 2006 (National Identity Registration Number) Regulations 2009, which comes into force on 20 October 2009, provide that

  • the number allocated to each card in the National Identity Register will provide no information about the person other than that an entry appears in the Register and that the entry has been given a number, and
  • the way in which the number is allocated will not be linked in any way to any other number or code allocated to the person.

The National Identity Registration Number (NIRN) is computer-generated and is not designed to provide any information about the person, e.g. to deduce information about a person’s age, gender or nationality.  It will also not be possible, by reading any two NIRNs together to establish any connection between the two individuals concerned.  The requirement also prevents sequential numbering being issued to individuals whose applications are made at the same time, e.g. family members, as has occurred in some circumstances with National Insurance numbers.

The NIRN must also not be generated by reference to any existing reference number or code assigned to the individual.  For example, this would prevent a National Insurance Number or a driver number being used as the basis for the creation of a NIRN or such numbers themselves being used as the individual’s NIRN.  In turn, this prevents any unintentional linkage, through the format of the NIRN, to information held about the individual which is accessed by means of other reference numbers or codes.

Further information:

The Identity Cards Act 2006 (National Identity Registration Number) Regulations 2009

Explanatory Memorandum to the Identity Cards Act 2006 (National Identity Registration Number) Regulations 2009


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2 comments on “National Insurance Numbers – National Identity Registration Number to be entirely random”


  1. AGNUS WOOD says:

    This post has been edited for security reasons.
    Can you please explain why I have been allocated three (3) N.I. numbers they are : LL…… – CL…… – AX…… my date of birth is …… I live at ……
    My telephone number (my daughters) …… is ……
    I am hard of hearing and my daughter handles my affairs.
    I will look forward to hearing from you
    Many thanks
    Agnus Wood

  2. Agnus: As this us a public forum, we have removed the personal information in your question. You should only have one NI number and only HM Revenue & Customs can explain why you have three. You need to discuss the situation with HMRC Registrations, at 0845 915 7006, between 8.00 am to 5.00 pm Monday to Friday.

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