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- Telephone: 0300 200 3500
- Textphone: 0300 200 3519
- Outside UK: +44 191 203 7010
Call to get advice if:
- you’re between 15 years and 9 months and 20 years old and haven’t received a National Insurance number
- you’ve lost or can’t remember your National Insurance number
- you need a letter confirming your National Insurance number
HMRC can’t confirm National Insurance numbers over the phone.
Apply for a National Insurance number if you’re over 20 years old and haven’t got one.
8am to 8pm, Monday to Friday
8am to 4pm, Saturday
Closed Sundays and bank holidays