The sudden death of a British whistleblower who helped expose previously undisclosed links between Jeffrey Epstein and US Commerce Secretary Howard Lutnick has triggered calls for an independent investigation into how he was treated by UK regulators.
Simon Andriesz, a 57-year-old former managing director at the brokerage BGC Partners, spent years fighting his former employer and Britain’s Financial Conduct Authority (FCA) over allegations of financial misconduct and retaliation against whistleblowers. His family said there is no suggestion of foul play after he died by suspected suicide in Thailand on September 23.
Andriesz had begun raising concerns about alleged accounting irregularities at BGC as early as 2016. He later accused the FCA of failing to properly investigate his disclosures and protect him after his identity became known to the company. The regulator subsequently acknowledged that it had wrongly advised him that he was not entitled to whistleblower protections and apologized.
His allegations led to action elsewhere. US regulators, including the Commodity Futures Trading Commission and Securities and Exchange Commission, pursued enforcement cases connected to BGC, while Britain’s tax authority imposed penalties on the firm. Andriesz received a $420,000 whistleblower award from US authorities, although he said his legal, medical and other costs had far exceeded the payout.
More recently, Andriesz emerged as a source of information about Lutnick’s previously undisclosed dealings with Epstein.
He said he uncovered 2018 emails in the released Epstein files showing Lutnick and the convicted sex offender discussing a digital advertising company called Adfin, in which both had invested. Andriesz provided the material to the US House Oversight Committee before Lutnick testified to lawmakers in May. Lutnick told the panel he had not known until 2026 that Epstein was a fellow investor in the venture.
The revelations intensified scrutiny of Lutnick’s previous characterization of his relationship with Epstein. The Commerce Department has rejected accusations that Lutnick misled lawmakers, dismissing them as partisan attacks.
Andriesz’s death has now prompted British lawmakers and whistleblower campaigners to demand an independent examination of the FCA’s conduct.
Labour MP John McDonnell and other members of a cross-party parliamentary group have argued that the regulator should not be allowed to investigate itself. The FCA has instead appointed board member Lea Paterson to review its handling of Andriesz’s case.
The FCA claimed it took information supplied by Andriesz seriously but acknowledged errors in its dealings with him. Before his death, Andriesz had described its response to the alleged wrongdoing he exposed as little more than a regulatory “slap on the wrist.”