I had an APP scam attempt where I intentionally played their game (by providing fake details) to see how it would go. They were claiming I owed taxes and a legal case was underway that I could resolve by paying said taxes but I'd need to pay the money to the court-appointed lawyer/public defender (whose name & account details they provided me) and not HMRC.

They also repeated say in bold "don't send money to people you don't know" and "We will NEVER ask you to transfer cash" and "Once sent money cannot be retrieved" etc.

A lot of very dumb people have 5 or 6 figure cash piles.

I imagine this is weirdly easy to socially engineer your way around, as a scammer. "Oh you can ignore that, we're a subsidiary department of the bank so it shows up differently" etc