Joining NS&I

  • Your NS&I number

    The ID number you'll need for our online and phone service.

  • How to create your password

    Follow these simple rules to create a secure online password.

  • Saving with us if you live outside the UK

    Its simple. If you live overseas, you can still save and invest with us.

  • Documents that prove your identity and address

    How we check your identity and some documents we might need to see.