Everyone needs to enroll biometrics for their citizenship application, even if they have enrolled them before for another application.

When you submit the form and pay, you will be invited to set up an account with Sopra Steria, once you do that, you are able to book an appointment with one of the UKVCAS centres, where you will do your biometrics at the appointment.

See: Submitting the form and booking your UKVCAS appointment.

You will be charged the biometrics fee when paying for your application, however, you may still need to pay for your UKVCAS appointment.

See: UKVCAS services