Whistleblower Simon Andriesz reveals how he unearthed evidence that US Commerce Secretary Howard Lutnick had concealed a business relationship with the paedophile financier, Jeffrey Epstein. The British broker, who worked at one of Lutnick’s Wall Street firms, made the discovery in the Epstein files, some of which were released earlier this year.

Mr Andriesz also speaks for the first time about the personal cost of disclosing what was going on inside one of the companies then run by Howard Lutnick and his decade-long battle with courts and regulators. And he reveals how Mr Lutnick's firm was keen to agree a $1m deal with the former Prince Andrew for introductions to wealthy individuals and sovereign institutions.

This programme has been edited since it was first released to correct errors in dates.

Presenter: Andy Verity Producer: Rob Byrne Production co-ordinator: Tom Dunster & Tim Fernley Technical producer: Cameron Ward Editor: Tara McDermott

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