HMRC Admin 5
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RE: How do I get my N.I. number? I'm a UK national that moved abroad at 8 and never received one
Hi
You can start working without a National Insurance number, however, you may already hold one.
You can complete and send the CA5403, which wwe can use to trace your national insurance number.
If you do not have one, once you return to the UK you can apply by going to Apply for a National Insurance number
Thanks