[ItsBob]

FWIW, I work for a major financial organization in the UK as a software architect and I've brought it up more than once over the years in various roles: not a single bank in the UK supports Yubikeys or custom Authenticator apps.

Not one (I last checked about a month ago!)

Security, while pretty good, is still lacking imo!

[cjrp]

Ironically until fairly recently Nationwide required the little keypad authenticator thing, and everyone hated it!

[ItsBob]

I had one of those umpteen years ago with RBS. I hated it at the time too :)

However, I use a Yubikey as often as I can nowadays and authenticator apps too where possible.

I'd like the option to use one but I can't :(

[Ntrails]

I thought they still did for website flow at least. Bizarrely we seem to think that phone apps are infinitely secure and don't need the extra step because biometrics?