British nationals

You may be able to register as a British citizen if you’re a British national.

There’s a different way to register if you’ve lived in the UK for 5 years or have worked in the Crown service.

You’re a British national and don’t have any other citizenship or nationality

To apply to register, you must be one of the following:

You’ll get British citizenship if your application is successful. Your children won’t automatically become British citizens if they were born outside the UK.

When you can’t apply

You can’t register as a British citizen if you’re a British overseas territories citizen (BOTC) and one of the following applies:

  • you’ve previously given up British citizenship
  • your BOTC status is in connection only with the sovereign base areas of Akrotiri and Dhekelia

How to apply

Fill in:

Application Cost
Each adult £1,163
Each child £973
If child turns 18 during application process £80 each child (for citizenship ceremony)

Send the application form and payslip to the correct address for the country you’re in.

In most cases you won’t get a refund if your application is refused. Read the guidance to form B(OS) before applying.

You’ve lived in the UK for 5 years or worked in the Crown service

You may be able to register as a British citizen if you hold any form of British nationality and either:

  • you’ve lived in the UK for at least 5 years - and spent no more than 450 days abroad during that time, and no more than 90 days abroad in the last 12 months
  • you’ve worked in the Crown service at any time

You’ll get citizenship ‘otherwise than by descent’ if your application is successful. Your children can also be British citizens.

How to apply

Fill in:

Application Cost
Each adult £1,163
Each child £973
If child turns 18 during application process £80 each child (for citizenship ceremony)

Send the application form and payslip to the correct address for the country you’re in.

In most cases you won’t get a refund if your application is refused. Read the guidance to form B(OTA) before applying.

After you apply

You’ll also need to provide biometric information (fingerprints and a photo). You’ll be sent a letter explaining how. It costs £19.20.