Redbridge e-forms Book a citizenship ceremony 1Your details2Home Office details You can only book your ceremony if you have your Home Office invitation letter or email. You cannot book a ceremony on an approval or decision letter. Complete the online form to book your citizenship ceremony.Your detailsFirst name(Required)Last name(Required)Email(Required) Telephone number(Required) Home Office detailsHome Office reference number (this is on your Home Office invitation letter or email)(Required)Attach your copy of the Home Office invitation(Required)Max. file size: 50 MB.