Not sure they’re being naughty. There’s a regulatory requirement to file a suspicious activity report. They’d fulfilled that regulatory requirement.
What needs to happen is that the regulations need to be harsher – but coming from the criminal banana republic united kingdom, that’s not going to happen.
City of London has quite separate laws from the rest of the country to facilitate exactly this sort of activity. UK.gov is going to require people who register companies in the UK to actually give their name. Woo-hoo – years after the Tories have been resistant to this.
Of course, they’ll sell that as doing great stuff against fraud. Which is utter crap.
But the banks are acting as they’ve been legally mandated to act.