A whistleblower unveils exclusive allegations about Lutnick and Epstein’s business ties.

In an exclusive investigation, a whistleblower has told the BBC how he unearthed evidence suggesting that US Commerce Secretary Howard Lutnick failed to disclose a business relationship with the paedophile financier, Jeffrey Epstein.

Simon Andriesz was a trader at one of Lutnick’s Wall Street firms, but it wasn’t until the Epstein files were released earlier this year that he says he confirmed a longstanding suspicion that his boss was misrepresenting his relationship with Epstein.

BBC financial investigations correspondent Andy Verity joins us to unpack the new investigation.