The spammers will always be able to make fake sites quicker than they can be taken down.
Teach your partner safe browsing habits: How domains work, and to never trust anything government unless it's from a .gov.uk directly before the first slash. Bookmark their banks for them and tell them to never access anything banking-related except from those bookmarks, and never from a link or an email. If in doubt, just have them wait and ask you.
My partner got scammed out of $300 a few years back. Told her to never send money to anyone online without checking with me first, and we've been fine since.
-----
If you really want to, you can report the link to non-government blocklists, like:
- Google's: https://safebrowsing.google.com/safebrowsing/report_general/
- uBlock Origin's https://gitlab.com/malware-filter/phishing-filter#phishing-u... and https://gitlab.com/malware-filter/urlhaus-filter#malicious-u...
But I wouldn't bother. They can make them quicker than you can report them.