Is it possible to register and legalize relationship proof for visa or sponsorship in UK/New Zealand?

Yes, you can register and legalize relationship proof for visa or sponsorship, but the process and required documents vary by country.

- UK: You must show your relationship is genuine and ongoing. Acceptable documents include a valid marriage or civil partnership certificate, joint tenancy or utility bills, joint bank statements, and photos together at important events.
- UAE: Sponsors can submit a "letter of obligation" and must provide recent, stamped bank statements and wage certificates. Additional documents may be needed based on financial standing.
- Germany: For marriage-based visas, you need a certificate of intended marriage from a German Civil Registrar and proof of your partner's immigration status.
- New Zealand: You must provide evidence of your partner's immigration status, police certificates (if required), and proof of sufficient funds. Sponsors may also need to submit financial and employment documents.

Document requirements are subject to change and must be recent and official.