Which visa types actually trigger the requirement?
Family sponsorship most reliably. A spouse visa rests on a marriage certificate and a child's visa on a birth certificate, and where those were issued abroad they need the full chain.
Employment files are less uniform. Some employers and some regulated roles require an attested degree; many standard private-sector positions do not.
- Spouse sponsorship: marriage certificate
- Children: birth certificates for each child
- Employment: degree, where the role or authority requires it
- Regulated professions: qualification evidence, often with equivalency