HMRC Customer Support on Twitter: "@ClaireTBR The contact number for the national insurance number - registrations helpline is 03002003500. Nataysha" / Twitter
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GOV.UK Notify
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HMRC
How Do I Know if a Letter From HMRC is Genuine? | HB&O
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Don't get caught out by fake HMRC phone numbers | Low Incomes Tax Reform Group
What is a UTR Number? What to Do If I Have Lost My UTR Number? | DNS Accountants
Examples of HMRC related phishing emails, suspicious phone calls and texts - GOV.UK
HMRC warns of tax credit scam
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HMRC
