Is a caller saying my National Insurance number has been compromised a scam?
Yes. No UK government body will call you to say your National Insurance number is compromised and demand you verify it or make a payment.
Last reviewed: 1 June 2026
Explanation
This scam targets UK residents with a recorded or live call claiming their NI number has been used for criminal activity. The caller — often claiming to be HMRC or the police — says the number has been 'suspended' and that warrants are being issued. They ask you to confirm the number, pay a fee to 'protect' it, or stay on the line while the matter is investigated. HMRC and DWP do not make unsolicited calls about NI number fraud. The goal is to extract your real NI number, personal details, or payment. Variants of this scam occur in the US targeting Social Security numbers.
Common red flags
- Automated or live call claiming your NI or SSN is linked to criminal activity
- Threatens arrest, court action, or account freezing
- Asks you to confirm your number to clear the issue
- Requests payment by bank transfer, crypto, or gift card
What to do now
- Hang up immediately
- Do not confirm, deny, or read out your NI number
- Report the call to Action Fraud (UK) or the FTC (US)
- Contact HMRC directly using their official website if you have genuine concerns
Frequently asked questions
Can my NI or Social Security number actually be suspended?
No. National Insurance numbers and Social Security numbers cannot be suspended or deactivated. Any claim to the contrary is a scam.