Well as far as I know banks in Europe (UK included) already ask you a lot of questions when you withdraw your money(I.e cash) or even when you wire various amounts( unless you have a good bank manager). My bank manager in Europe just told me straight that I don’t need to explain him anything but he has to call me anyway because of the bank policy(I.e to tick the boxes).

Next is a hold on your suspicious transaction, request additional documents for your own money, basically a lot of AML and KYC before you can use what’s yours.

I understand the reason why they do this but it feels to me you are no longer in control of your money/property and somehow they fail to catch people loading billions from shady sources so I would rather not keep my money in a bank (at least not a retail bank) if I had a sensible option.

Most people don’t care about this until they get trapped just like most people are /were OK with Paypal and other junk services.