Hi,
I’m sorry to hear about the loss of your National Insurance number.
I can assure you there are measures in place to ensure your National Insurance account is secure.
However please call the National Insurance enquiries helpline so we can run a few checks on your account to help us decide the best action to take.
National Insurance Enquiries helpline
Number
0300 200 3500
Text Relay
18001 0300 200 3500 (Text Relay)
Overseas
+44 191 203 7010
Open
Monday to Friday: 8am to 6pm
Closed on Saturdays, Sundays and Bank Holidays.
Web Address
National Insurance: detailed information
Thank you.