Simon Andriesz, a 57-year-old British banker and former managing director at BGC Group, died by suicide late last month. For nearly a decade, Andriesz had been raising alarms — first about accounting irregularities at BGC in 2016, then about alleged undeclared business ties between BGC chief executive Howard Lutnick and the late sex offender Jeffrey Epstein, which he reported to the FBI in 2020-21. Lutnick, now US commerce secretary, has denied any personal or professional relationship with Epstein. The Financial Conduct Authority now admits it gave Andriesz misleading information, wrongly telling him he would not qualify for whistleblower protection because his identity had become known. The regulator has apologised and promised further training for its whistleblowing team. It has now tasked newly appointed non-executive board member Lea Paterson to review how staff handled Andriesz's concerns. The review is internal. That last detail is the fulcrum. The all-party parliamentary group on investment fraud, chaired by Labour MP John McDonnell, has called the arrangement what it is: the FCA marking its own homework. The APPG is demanding an independent, externally funded forensic evaluation of how the regulator handles whistleblowers. If the FCA refuses, McDonnell says the group will consider conducting its own call for evidence from whistleblowers. Andriesz had unearthed an email chain in the Epstein files suggesting Lutnick and Epstein discussed a shared startup business venture in 2018. Epstein died in jail in August 2019 while awaiting trial on sex trafficking charges. Andriesz told the BBC's File on 4 Investigates that authorities in both the US and UK had failed to hold BGC and its parent company Cantor Fitzgerald properly to account, or to protect him from potential retaliation. He also raised concerns publicly about the toll whistleblowing had taken on his family, career, and health. The structural pattern here is familiar and damning. A whistleblower surfaces material concerns about a powerful financial firm. The regulator tasked with protecting that person instead misinforms them about their legal standing, effectively stripping away their shield. Years pass. The whistleblower's career, finances, and wellbeing deteriorate. When the worst outcome materialises, the regulator launches a review — of itself. BGC Group has disputed Andriesz's allegations but declined to relitigate them following his death. Lutnick has not been accused of wrongdoing in relation to Epstein and has condemned Epstein's conduct. Neither denial addresses the systemic question: whether the UK's primary financial regulator has a functioning whistleblower protection infrastructure, or merely the appearance of one. The Transparency Task Force, a campaign group of which Andriesz was a member, confirmed his death over the weekend. The case is now a test of whether the FCA's accountability architecture is real or decorative — and whether Parliament has the will to force the distinction.