Where the money came from: In 1996, Lynch founded the software company Autonomy. It continued to grow before he sold it to HP for £6.5 billion ($9.94 billion) in October 2011. HP fired Mike Lynch in 2012 following "disappointing results."
Age: 45
Overall rank on the Sunday Times Rich List: 235
Where the money comes from: The entrepreneur probably best know for his role on "Dragon's Den" is heavily involved in the telecoms industry. He recently launched Brandpath, a merger of his previous telecoms investments.
Age: 49
Overall rank on the Sunday Times Rich List: 232
Where the money came from: Cash has invested in a number of internet firms, as well as London real estate. An "elusive" figure, there are few photos of him out there.
Age: 51
Overall rank on the Sunday Times Rich List: 217
Where the money came from: Rigby is behind Specialist Computers, one of the country's largest independent IT suppliers and Europe's largest privately owned technology company. He founded the company with a cash investment of just £2,000 in 1975.
Age: 71
Overall rank on the Sunday Times Rich List: 199
Where the money came from: Farquhar is one of the two co-founders of software company Atlassian. Farquhar and co-founder Mike Cannon-Brookes recently moved to London to prepare for a Nasdaq stock market float.
Age: 35
Overall rank on the Sunday Times Rich List: 192
Where the money came from: Cannon-Brookes co-founded software company Atlassian. He met co-founder Scott Farquhar at university, founded the software company in 2002 and by 2014, aged 34, they were featured on BRW's Rich List as billionaires.
Age: 35
Overall rank on the Sunday Times Rich List: 189
Where the money came from: Andreev created Badoo in 2006, a London-based social network popular in Latin American.
Age: 35
Overall rank on the Sunday Times Rich List: 160
Where the money came from: Sudanese-born, Ibrahim's fortune comes from telecoms, and he founded African telecommunications company Celtel.
Age: 68
Overall rank on the Sunday Times Rich List: 159
Where the money came from: Parsol made her first fortune in online pornography before switching gears and founding online gambling company PartyGaming, which is responsible for PartyPoker.
Age: 48
Overall rank on the Sunday Times Rich List: 158
Where the money came from: Zennström is one of the co-founders of internet communications platform Skype.
Age: 49
Overall rank on the Sunday Times Rich List: 140
Where the money came from: In 1993, Nixon created Moneysupermarket.com, a price comparison site. It had 2014 revenues of £248 million ($380 million).
Age: 47
Overall rank on the Sunday Times Rich List: 120
Where the money came from: Ross' billion-dollar fortune comes from co-founding mobile phone retailer Carphone Warehouse. Founder Charles Dunstone was the public face of the company while Ross was its "secret weapon," developing and driving its high-street retail branches. He resigned from Carphone Warehouse in 2008.
Age: 49
Overall rank on the Sunday Times Rich List: 108
Where the money came from: One of Britain's best-known businessmen, Lord Sugar founded consumer electronics company Amstrad in 1968. He is now the face of "The Apprentice."
Age: 68
Overall rank on the Sunday Times Rich List: 101
Where the money came from: Matthews is a telecoms entrepreneur who started out working at British Telecom and went on to found Mitel and Newbridge Networks.
Age: 71
Overall rank on the Sunday Times Rich List: 101
Where the money came from: The Greek entrepreneur runs TV channel streaming site FilmOn amongst other Internet ventures, and his family is also invested in Coca-Cola Hellenic.
Age: 46
Overall rank on the Sunday Times Rich List: 80
Where the money came from: The Caudwell Group, launched in 1986, sold mobile phones while they were still in their infancy — making Caudwell rich. Its retail arm was Phones 4u. Caudwell ultimately sold the business in 2006.
Age: 62
Overall rank on the Sunday Times Rich List: 65
Where the money comes from: Moritz is chairman of Silicon Valley venture capital firm Michael Moritz. He has invested in PayPal, Google, Yahoo, Zappos, YouTube, and numerous other tech companies. He has also written a book on Apple.
Age: 60
Overall rank on the Sunday Times Rich List: 52
Where the money came from: Dunstone co-founded mobile phone retail chain Carphone Warehouse from his flat in Marylebone, London, using £6000 of savings. He also chairs the TalkTalk group.
Age: 50
Overall rank on the Sunday Times Rich List: 51
Where the money came from: Peter's daughter Denise founded Bet365 in 2000, which has since grown to become one of the biggest online gambling companies in the world. Brother John also helps run the company.
Age: 47
Overall rank on the Sunday Times Rich List: 44
Where the money came from: Sagi founded Playtech in 1999, a software company that helps power online gaming and gambling. It had 2014 revenues of €457 billion. Although he was born in Israel, London is the billionaire's playground. He recently bought North London's Camden Market.
Age: 43
Overall rank on the Sunday Times Rich List: 39
Where the money came from: Scheinberg co-founded the wildly successful online gambling platform PokerStars along with his father.
Age: 41
Overall rank on the Sunday Times Rich List: 36
Where the money came from: Dyson is a prolific British inventor, famous for his high-tech hoovers. His more recent notable inventions include the Dyson Airblade hand dryer and the Air Multiplier, a fan without external blades.
Age: 68
Overall rank on the Sunday Times Rich List: 22
Where the money came from: The rockstar entrepreneur began by launching his Virgin Records music stores, which eventually became more than 400 companies under the umbrella of the Virgin Group. One notable tech venture is Virgin Galactic, Branson's space exploration company.
Age: 64
Overall rank on the Sunday Times Rich List: 20
Where the money came from: The Barclay brothers have a broad portfolio, including the Telegraph newspaper. Under their ownership it has rapidly modernised for the digital age — but has seen a fair amount of controversy in the process.
Age: 80
Overall rank on the Sunday Times Rich List: 13
Where the money came from: The brothers' family moved to the UK from India in the fifties. They invested heavily in the metals market, but have since turned their gaze to property and internet investments. They own Global Switch, one of the largest data centre providers in Europe and Asia.
Age: 73
Overall rank on the Sunday Times Rich List: 5
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