Are you a fan of Dragons' Den? The BBC show, which has been on screens for more than 15 years, gives budding entrepreneurs the chance to change their lives and become outrageously successful businessmen and women.
MORE: Dragons' Den: meet the children of Peter Jones, Touker Suleyman and more
But have you ever wondered how the Dragons themselves made their fortunes? We did some investigating and here's what we found out...
WATCH: Former Dragons' Den Duncan Bannatyne's proposal details revealed
Peter Jones CBE has always had an eye for business and started his first aged 16, setting up a tennis coaching school. However, the road to success hasn't always been easy; at one point, he had to move back in with his parents after a deal went wrong.
Peter Jones started his first business at 16
But after spending investing in a myriad of sectors, from media and hospitality to retail and property, he is now a certified millionaire, with an estimated net worth of £450million.
MORE: Dragons' Den stars' impressive homes: Peter Jones, Deborah Meaden & more photos
MORE: Dragons' Den introduces youngest ever investor for new series - meet him here
The show's youngest-ever Dragon, Sara Davies, made her fortune in the crafting sector. Over ten years ago, when she was just a student, she founded Crafter's Companion from her university bedroom. Spotting a gap in the market for an envelope-making tool for card makers, Sara decided to invent one herself!
Sara Davies started her own crafting company while still a student
With the help of her engineer dad and husband Simon, she grew the business from a kitchen table startup to a £37million business that now sells thousands of crafting must-haves all over the world.
MORE: Dragons' Den: 5 of the most successful businesses that were rejected
Deborah Meaden launched her first business - a glass and ceramics import company - when she was just 19. It became hugely successful, supplying the likes of department store Harvey Nichols, but it was in leisure parks that Deborah really made her fortune.
Deborah made her fortune in the leisure park industry
She became Managing Director of Weststar Holidays in the nineties and worked tirelessly before selling the company in 1991 for £33million. She continues to make money as a full-time investor, and is now worth an estimated £40million, according to Spear's magazine.
Tej Lalvani started his career working in the warehouse of family business Vitabiotics. His father, professor Kartar Lalvani, founded the company in 1971 and Tej succeed him as CEO in the early noughties.
Tej Lalvani started his career working for his family business
Since taking over the reins, Tej has grown the business into one of the UK's leading and most innovative nutrition companies, and it currently has a turnover of over £300 million a year.
MORE: Dragons' Den: 5 of most successful businesses from the show
Touker Suleyman is best known as the founder of quintessentially British menswear brand Hawes & Curtis and is credited with reinventing the seminal 90s womenswear label, Ghost. But before that, he was working in accountancy.
Touker Suleyman is a fashion mogul
Realising it wasn't for him, the retail mogul entered into a joint venture with a leather factory and soon after established a clothing manufacturer supplying to some of the biggest names of the British high street. He is now worth a staggering £150million, according to Spear's magazine.
Like this story? Sign up to our newsletter to get other stories like this delivered straight to your inbox.