Courier services are free of charge if you choose to have your documents returned to one of the collection points around the United Kingdom operated by the Embassy appointed courier service. Home Delivery is available at a cost of $30.00 per applicant; payment is by credit card. Please see https://usvisa-info.com for further information.
Nonimmigrant visa applicants are required to arrange for the return of their passport by courier before they schedule the appointment for the visa interview. Immigrant and K visa applicants are required to arrange for the return of their passport once they have received notification of their appointment date either from the National Visa Center or Immigrant Visa Unit and before they attend the Embassy for the interview.