Inf2 form

John Compton made this Freedom of Information request to Department for Work and Pensions

This request has been closed to new correspondence from the public body. Contact us if you think it ought be re-opened.

The request was partially successful.

Dear Department for work and pensions
I understand that the National Insurance Number (NINO) is in the
format "AA NN NN NN A", where A represents a letter and N a number
from 0–9.
Could you please provide the following information under the
Freedom of Information Act:
1. A list of the two-letter combinations ever used as the first two
characters of NINOs so far issued to people in the UK.
2. A list of the two-letter combinations ever used as the first two
characters of NINOs used for administrative or other special
reasons (e.g. "TN", "MW", "PP").
3. A list of the two-letter combinations scheduled to be used as
the first two characters of future NINOs for people in the UK.
4. A list of the two-letter combinations scheduled to be used as
the first two characters of future NINOs for administrative or
other special reasons.
5. A list of letters ever used as the final (9th) character of
NINOs.
6. The reasons why "GB", "BG", "NK", "KN", "NT", and "ZZ" cannot be
used as the first two characters of a NINO.
7. The reasons why "F", "M", and "P" were used as the final (9th)
character of NINOs.
Could you also answer the following questions:
1. Is it true that the numbers (the 3rd–8th characters) of NINOs
are allocated consecutively from "000000" to "999999"? (And if not,
how are they allocated? And from what starting number does the
allocation begin? And at which number does it end?)
2. Do any of the characters of NINOs act as a "check digit" by
which the validity of the NINO can be verified (using the otherz
constituent characters of the NINO)?

Yours faithfully,

John Compton

DWP freedom-of-information-requests, Department for Work and Pensions

This is an automated confirmation that your request for information has
been accepted by the DWP FoI mailbox.
 
By the next working day your request will be forwarded to the relevant
information owner within the Department who will respond to you direct. 
 
If your email is a Freedom of Information request you can normally
expect a response within 20 working days.
 
Email FOI responses will be issued from [1][email address]
We recommend that you add this address to your email contacts otherwise
the response may be treated as Spam or Junk mail.  
 
Should you have any further queries in connection with this request do
please contact us.
 
[2]http://www.gov.uk/dwp
 
 

show quoted sections

References

Visible links
1. mailto:[email address]
2. http://www.gov.uk/dwp

no-reply@dwp.ecase.co.uk on behalf of Operations FOI Team, Department for Work and Pensions

1 Attachment

Dear John Compton,

I am writing in response to your request for information, received 2nd
June.

Yours sincerely,

DWP Central FoI Team