A blocked vacuum cleaner led to a billion-dollar idea for British inventor Sir James Dyson. After studying art, then reinventing the wheelbarrow, Dyson struck gold with his iconic bagless vacuum, but only after years of effort.

BBC business editor Simon Jack and journalist Zing Tsjeng take us back to the entrepreneur’s youth in post-War Norfolk and discover a childhood marked by tragedy. From his years as a jobless inventor, frustrated by existing technology, Dyson’s story is one of innovation, ambition and risk, with legal battles once leaving him on the verge of bankruptcy. But the engineer’s determination and obsession with perfection paid off, with his company now worth billions. The Dyson name has become synonymous not only with vacuum cleaners, but also fans, heaters, hand dryers and hairdryers. He’s even started his own engineering university. Simon and Zing look back at Dyson’s success story and find out how he made his fortune, before deciding if they think he’s good, bad, or just another billionaire.

Good Bad Billionaire is the podcast exploring the lives of the super-rich and famous, tracking their wealth, philanthropy, business ethics and success. There are leaders who made their money in Silicon Valley, on Wall Street and in high street fashion. From iconic celebrities and CEOs to titans of technology, the podcast unravels tales of fortune, power, economics, ambition and moral responsibility, before inviting you to make up your own mind: are they good, bad or just another billionaire?

Lefteris Karapetsas of Rotki | Private Portfolio Management