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HMRC National Insurance postal address

Use this address for a written National Insurance query, for example a question about your contribution record or gaps shown in it. The official contact page also explains online and telephone options.

Official source checked . GOV.UK: National Insurance enquiries

When to use another route

This enquiry address is not an application for a new National Insurance number or a method of paying voluntary contributions. Complaints and suspected tax fraud also have separate HMRC procedures.

Postal address

PT Operations North East England HM Revenue and Customs BX9 1AN United Kingdom

Keep the full department name PT Operations North East England. HMRC explicitly says a street, city and PO box are unnecessary with BX9 1AN. The blank town is intentional.

The address will be filled in for you to review and edit. Writing and downloading a PDF are free; printing and post are paid at checkout.

Before you write

  • Specify which contribution years or record entries your question concerns, and what you would like HMRC to check.
  • Use the official online National Insurance record service to check the information already available before preparing a letter.
  • If you need to find a lost National Insurance number or apply for your first one, follow the separate service linked from the official page.

Check the official instructions again before sending, especially when replying to a letter that names a different team or address.

Prepare, review and keep a copy

Write your letter online or upload a PDF. The address stays editable and you review the document, postal service and full price before paying. Keep your own copy of the final letter and any references.

PostOwl prints PDF pages and posts them from inside the UK. It cannot include original documents, cheques or other physical enclosures. Printing acceptance, postal handoff and confirmed delivery are different stages; read about postal records and proof of posting if your letter is time-sensitive.

PostOwl is an independent printing and posting service and is not affiliated with this organisation. This entry helps you find an address; it does not determine whether your letter satisfies a particular process or deadline.