Request a National Insurance Number Letter

  • Home /
  • Written Confirmation

Before you start

Use this form to:

  • report a change of details
  • get a replacement letter
  • get a written confirmation

Do not fill in this form if you have never had a National Insurance number before. If you need a new National Insurance number then you must apply for one first.

What happens next?

After you complete the form our team will check it for errors and then post it to you for it to be signed and dated. You then need to return the signed application pack to the HMRC using the prepaid envelope. It can take 15 working days for the confirmation letter to be received through the post.

Coronavirus (COVID-19)

We are processing applications as normal. However, due to the COVID-19 pandemic there are delays so you may not receive your confirmation letter within the expected timeframe. Thank you for understanding.

Your details

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Title must be completed
First name(s) must be completed

Do you have a previous first name?

Do you have a previous first name must be completed
Previous first name(s) must be completed
Last name must be completed

Do you have a previous last name?

Do you have a previous last name must be completed
Previous last name must be completed

Are you male or female?

Are you male or female must be completed

Date of birth

Day is required
Month is required
Year is required
You must be over the age of 16 to apply

Do you know your National Insurance number?

Do you know your National Insurance number must be completed
National Insurance number must be completed in the correct format
e.g. AB123456C
Email must be completed
Phone number must be completed
Include the country code if you are outside the UK

Address details

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Is your current address in the UK?

Is this address in the UK must be completed

Find address

Unable to find addresss, enter the address manually below
Address 1 must be completed
Town must be completed
Postcode must be completed
Country must be completed

Are you returning to the UK from living abroad?

Are you returning to the UK from living abroad must be completed

Have you had any previous addresses?

Have you had any previous addresses must be completed

Is this address in the UK?

Is this address in the UK must be completed

Find address

Unable to find addresss, enter the address manually below
Previous address 1 must be completed
Previous town/city must be completed
Previous postcode must be completed
Previous country must be completed

Lived at this address from

Day is required
Month is required
Year is required
Enter an estimate if you do not know the exact date

Lived at this address to

Day is required
Month is required
Year is required
Enter an estimate if you do not know the exact date

Marriage or civil partnership details

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Are you married?

Are you married must be completed

Date of marriage

Day is required
Month is required
Year is required

Are you in a civil partnership?

Are you in a civil partnership must be completed

Date of Civil Partnership

Day is required
Month is required
Year is required

Have you ever been married or in a civil partnership in the past?

Have you ever been married or in a civil partnership in the past must be completed

Date of past marriage or civil partnership

Day is required
Month is required
Year is required

Date of divorce or dissolution of civil partnership

Day is required
Month is required
Year is required
Reason why marriage or civil partnership ended must be completed

Your UK Benefit details

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Have you ever claimed child benefit?

Have you ever claimed child benefit must be completed
A Child Benefit Number starts with 'CHB' and is made up of 8 numbers and 2 letters, eg CHB12345678AB.

Have you ever claimed any other UK benefits?

Have you ever claimed any other UK benefits must be completed
Tell us the benefits you’ve claimed must be completed

Your Employment details

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Have you ever worked in the UK?

Have you ever worked in the UK must be completed
Name of most recent UK employer must be completed
Work address 1 must be completed
Work address 3 must be completed
Work address 4 must be completed

Employed from

Day is required
Month is required
Year is required
Enter an estimate if you do not know the exact date

Are you still employed by this employer?

Are you still employed by this employer must be completed

Employed to

Day is required
Month is required
Year is required
Enter an estimate if you do not know the exact date

Additional services

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Would you like a hard plastic card with your name and NI number printed on it?

NI Number Card
Easily fits in your wallet or purse so you never forget your NI number.

Need help?

Call us on +44 (0) 333 014 7210 to speak to a friendly member of our team.