(But in any case your bank will never call outwards to you, unless you've specifically requested that, which you almost never do.)
Please tell us more context with regard to your UK banks making multiple unannounced calls demanding your ID ... were you an individual customer? finance director? MD? or what? Why on earth do they do that? Have you told them in writing not to? There must be more backstory to that.
Non-banking: getting a call out of the blue from my Internet Service Provider again demanding enough credentials to get access to my (business) account, and unable to understand why that was very poor practice. I used to like that ISP a lot, and have been with it for a looooooong time, but the angry exchange with who seems to have been my account manager has soured the relationship a lot.
What are they, then? Sales/marketing calls? Or some security notifications ("we noticed some suspicious operations in the last 3 days...")? If it's the former, that's still scam in my books. Specifically, it's a first-party scam, as opposed to a third-party scam, where some third party pretends to be your bank.
They both should be treated similarly; unfortunately, you can't report first-party scams to police.
But the usual security call is exactly like a spam call, no authentication from their end, immediately requesting id verification "answer these security questions", and refusing to go off script.
People have been asking for years to be able to lodge a security challenge code on their profile that can add confidence in the caller. Given there are already multiple security questions on an account, this could be a process change: the security challenge script becomes "the first and sixteenth characters of your mother's maiden name are 7 and F, what are the third and fifth characters of your first pets name".
<phone rings, I pick up> Hello
Them: Am I speaking to Sean Hunter
Me: Yes
Them: This is <rubbish bank who should know better>. Can you confirm your <date of birth/full address with postcode>
Me: Yes
Them: Err, … sorry I didn’t quite catch that.
Me: Yes.
Them: <thoroughly confused>I asked whether you can confirm your <date of birth/full address with postcode>
Me: Yes. I can.
Them: err… I can’t talk to you without you passing security.
Me: You called me.
Them: I’m sorry…?
Me: You called me. You wanting to talk to me about something is your problem.
Them: I need you to pass security before I can talk to you.
Me: OK, well. Have a nice day. <hang up>
Almost this exact thing has happened multiple times with one of my bank accounts which I can’t completely shut because of boring reasons but I have basically deprecated because they do this sort of nonsense. My main bank now is much better.It mostly is, but Monero is pretty good.
I’d been hunting for ways to use a Wisecard standoff a bank but got a bit wary of what would happen if they went bust. Government backed guarantee do not exist for Wise.
I should probably learn how to insult their mother in Hindi too.
Same app is used to auth to government pages and all kinds of stuff online, even purchases.