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Leaked documents have revealed how some UK banks have helped criminals, money launderers and Russians under sanctions - and have also failed to stop crime when they suspected it.
The documents – known as the FinCEN files – were leaked to Buzzfeed News and shared with the BBC by the International Consortium of Investigative Journalists.
They show that London is a hub for money laundering – with billions of pounds worth of suspected dirty money moving through the banking system.
Mishal Husain presents BBC News at Ten reporting by Richard Bilton, for BBC Panorama.
