I think it was the BBC that did a program a few years ago with an undercover reporter pretending to be a corrupt Russian government official buying London real estate to launder their stolen gains.
The undercover reporter would go to see various flats with intent to purchase, and “admit” to the sales agents flat-out that he worked for a Russian health care office, processing billions of pounds worth of funding, and siphoned a little off for himself.
He’d then say he needed to know how to close on a property in such a way to hide his true identity. Without fail every single realtor gave him advice how to set up a shell company or which law firms he could contact that would do it for him by not asking all the required questions.
Even after the BBC called those estate agents and law firms to say they were duped, that the buyer was an undercover reporter, and if they had any comment, most refused to even acknowledge any wrongdoing. Despite the undercover buyer clearly indicating the funds were stolen.