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Get Your National Insurance (NI) Number in London, England (UK) (2026)

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Cost

Free

The service is free

Time at office

30 minutes

Estimated time

Immediate online

Quick summary

Complete guide to get your National Insurance (NI) number. Immediate online application or apply in person at the local HMRC office.

Required documents

  • Original Identity Document

    Passport, ID card or equivalent document.

  • ?

    Form CA1 Optional

    Required if applying in person at the HMRC office.

    ⚠️ Only if applied in person

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The service is free €0.00
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: 2026

Step by step

  • 1

    Online Application (Recommended)

    Go to official site

    Access the HMRC website and follow the instructions to apply for your NI number.

    !

    Expert tip

    "The online process is quick and does not require an appointment."

  • 2

    In Person

    If you prefer to do it in person, go to the local HMRC office with the required documents.

    !

    Expert tip

    "It's advisable to bring the completed Form CA1."

Offices and service points - London

HM Revenue & Customs (HMRC) - London

Accessible Appointment required City centre

200 Victoria Street, London SW1E 5DL

View on Google Maps
+44 300 200 3700
Monday to Friday: 8:00 - 16:00

Frequently asked questions

Can I apply for the NI number if I am not a UK citizen?
Yes, residents temporarily or permanently can apply for a National Insurance number.
How long does it take to receive my NI number by post?
Generally, you will receive your NI number between 2 and 3 weeks after applying.

Official sources and useful links

This guide is for informational purposes only. Always check the official source for current information.