Speaking for the UK, that’s every financial institution. The whole point is that everyone is required to complete checks to make sure you are who you say you are, if you refuse them then that is an indicator of money laundering. Even just receiving and returning money helps a money launderer establish a paper trail and assists in layering to legitimise the money they gave you. That’s a big no-no, obviously, so it can’t simply be returned without risking significant legal implications from the regulator. All expectations are set up front on this when beginning transactions.