UK-based banks have been accused of processing $738m (£594m) of Russian money as part of a multi-billion pound money laundering scam.
High street names including HSBC, Royal Bank of Scotland, Lloyds and Barclays have defended their systems for combating financial crime in response to the allegations, published in the Guardian.
They are among 17 British banks or foreign banks with branches in Britain identified by the newspaper's investigation.
It said they faced questions over what they knew about the international scheme and why they did not turn away suspicious money transfers.
Documents uncovered by the investigation reportedly showed that at least $20bn (£16bn) appeared to have been moved out of Russia over a four-year period from 2010 to 2014.
Banking records detailing the scheme were said to have been obtained by the Organised Crime and Corruption Reporting Project and Russian newspaper Novaya Gazeta from anonymous sources.
The documents include details of around 70,000 transactions, including 1,920 that went through UK banks and 373 via US banks.
A spokesman for HSBC said: "The bank has systems and processes in place to identify suspicious activity and report it to the appropriate government authorities."
RBS said: "We are committed to combating financial crime and money laundering in line with our regulations and have controls and safeguards in place to identify, assess, monitor and mitigate these risks."
A Barclays spokesman said: "Barclays complies with the rules and regulations in all the jurisdictions in which it operates and has systems and controls in place to mitigate the risk of the bank being used to facilitate financial crime."
Lloyds said: "We have effective processes in place to check the identity of customers as well as various tools to help identify suspicious activity.
"Where we identify any potential money laundering activity we advise the relevant authorities in line with our legal and regulatory obligations".
UK lenders have previously been caught up in allegations about money laundering.
HSBC revealed last month that it was facing a UK probe over money laundering rules.
In 2012, it agreed a settlement with US authorities involving a $1.9bn fine and being subject to an independent monitor.
Coutts has previously been fined in the UK for violating money laundering rules.
In January this year, Deutsche Bank was fined £560m by authorities in Britain and the US over alleged laundering of Russian money via London.