In the cited UK passport guidance, surname is the family-name field, while first and middle names covers the person’s first name and any middle names. “Family name” is ordinarily another term for “surname,” but the cited form uses the label Surname.
| Form label | What it represents |
|---|---|
| Surname | The person’s family name |
| First and middle names | The person’s first name and any middle names |
| Given name | A term that may refer to one or more given names, depending on the form |
| Family name | An ordinary alternative term for surname |
How should the fields be checked?
A reader should begin with the exact labels printed on the specific form rather than assuming that similar English terms always have identical scopes. If the form provides separate fields for given name, middle name and surname, each name component should be matched to the corresponding field.
ICAO’s passport machine-readable zone format distinguishes primary and secondary identifiers. This confirms that passport data treats name components separately at the technical-format level, but it does not mean that “primary identifier” can automatically be read as a first name or “secondary identifier” as a surname.
What still needs confirmation?
The cited UK guidance does not use Given Name as a separate field in the quoted instruction, and the ICAO excerpt does not provide a universal form-mapping rule. For a particular application, a reader must still confirm:
- whether the form says surname or family name;
- whether it provides one combined given-name field or separate first- and middle-name fields;
- how it instructs the applicant to order multiple name components.
The available official material does not establish a single rule for every possible name structure. The instructions accompanying the specific form therefore remain decisive.