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Posted Tue, 18 Jul 2023 09:07:12 GMT by
The last letter in my national insurance number has changed
Posted Fri, 21 Jul 2023 11:14:19 GMT by HMRC Admin 8 Response
Hi,
Please check your online record for confirmation of your full NI number.  
If the last letter differs to that you have used previously.  Just start using the correct letter from now on.
If in the past the wrong letter has been used this will not have any adverse impact on your NI record.  
NI numbers are not a form of identification and are for a UK tax and NI reference for an individual.
Thank you.

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