At one time, Browder worked for Robert Maxwell. Father of Epstein girlfriend Ghislaine.

https://www.independent.co.uk/news/business/analysis-and-features/accused-turns-accuser-against-bill-browder-s-claims-of-corruption-a6767376.html

Born in the US, Mr Browder, whose grandfather was once a US presidential candidate, spent most of his career working in London’s financial districts, joining Boston Consulting Group’s offices in Mayfair before stints at Robert Maxwell’s MCC conglomerate and the London outpost of US investment bank Salomon Brothers.