 25. Michael and Xochi Birch — Net worth: £317 million
Where the money came from: Birch started the Bebo social networking site with his wife in 2005. They made £357 million when they sold it to AOL, before buying it back for £600,000 in 2013.
Ages: 46 and 45
Overall rank on the Sunday Times Rich List: 317
YouTube/Google
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 24. Jan Mol — Net worth: £365 million
Where the money came from: Mol founded software company Volmac in 1966, and now funds his son Michiel’s projects, including space exploration via the Space Expedition Corporation.
Age: 76
Overall rank on the Sunday Times Rich List: =365
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 23. Peter Wilkinson — Net worth: £385 million
Where the money came from: The veteran entrepreneur founded Sports Internet Group, which was sold to BSkyB for more than £300 million, as well as InTechnology,
Age: 62
Overall rank on the Sunday Times Rich List: =313
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 22. Ricardo Zacconi — Net worth: £387 million
Where the money came from: Zacconi cofounded King, the gaming studio behind “Candy Crush.” The company was acquired by Activision Blizzard in 2015 in a deal that valued Zacconi’s stake at £376 million.
Age: 49
Overall rank on the Sunday Times Rich List: 312
King
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 21. Declan Ganley — Net worth: £400 million
Where the money came from: Ganley, from Ireland, is a telecoms entrepreneur, and CEO of Rivada Networks.
Age: 48
Overall rank on the Sunday Times Rich List: =299
Julien Behal/PA Archive/PA Images
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 20. Mike Lynch — Net worth: £469 million
Where the money came from: Lynch founded the software company Autonomy, which then sold to HP for £6.5 billion ($9.94 billion).
Age: 51
Overall rank on the Sunday Times Rich List: 267
The Royal Society / Wikimedia Commons
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 19. Peter Jones — Net worth: £475 million
Where the money comes from: The entrepreneur seen on “Dragon’s Den” launched Brandpath in 2015, a merger of his previous telecoms investments. He also founded Phones International.
Age: 51
Overall rank on the Sunday Times Rich List: =262
David Jensen EMPICS Entertainment / PA Images
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 18. Mel Morris — Net worth: £500 million
Where the money came from: Morris owns football team Derby County, and provided seed funding for King Digital, the company behind “Candy Crush.”
Age: 61
Overall rank on the Sunday Times Rich List: =245
Mike Egerton/EMPICS Sport
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 17. Dan Craddock — Net worth: £500 million
Where the money came from: Craddock is in charge of DLA Group, which provides IT consulting and software development. He’s also chairman of Vannin Capital, as well as managing director of Bramden Investments.
Age: 39
Overall rank on the Sunday Times Rich List: =245
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 16. Kevin Cash — Net worth: £500 million
Where the money came from: Cash has invested in a number of internet firms, as well as London real estate.
Age: 53
Overall rank on the Sunday Times Rich List: =245
Tim Ireland/PA Archive/PA Images
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 15. Sir Peter Rigby — Net worth: £600 million
Where the money came from: Rigby is behind Specialist Computers, one of the country’s largest independent IT suppliers
Age: 73
Overall rank on the Sunday Times Rich List: =209
Christopher Furlong / Getty
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 14. Andrey Andreev — Net worth: £700 million
Where the money came from: Andreev created Badoo in 2006, a London-based social network with a focus on dating.
Age: 43
Overall rank on the Sunday Times Rich List: =184
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 13. Mahmud Kamani and family — Net worth: £732 million
Where the money came from: Kamani is the cofounder of fashion retailer Manchester-based Boohoo.
Age: 52
Overall rank on the Sunday Times Rich List: 175
Media Hive Worldwide
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 12. David Ross — Net worth: £803 million
Where the money came from: Ross’ sub-billion-dollar fortune comes from co-founding mobile phone retailer Carphone Warehouse.
Age: 51
Overall rank on the Sunday Times Rich List: 160
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 11. Mo Ibrahim — Net worth: £904 million
Where the money came from: Sudanese-born, Ibrahim’s fortune comes from telecoms, and he founded African telecommunications company Celtel.
Age: 71
Overall rank on the Sunday Times Rich List: 143
Alex Wong / Getty
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 10. Sir Charles Dunstone — Net worth: £946 million
Where the money came from: Dunstone cofounded mobile phone retail chain The Carphone Warehouse, and also chairs the TalkTalk group.
Age: 52
Overall rank on the Sunday Times Rich List: 137
Peter Macdiarmid / Getty
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 9. Niklas Zennström — Net worth: £1 billion
Where the money came from: Zennström is one of the cofounders of internet communications platform Skype.
Age: 51
Overall rank on the Sunday Times Rich List: 132
Brian Ach / Getty
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 8. Sir Terry Matthews — Net worth: £1.2 billion
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: 73
Overall rank on the Sunday Times Rich List: 114
Richard Heathcote / Getty
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 7. Simon Nixon — Net worth: £1.2 billion
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: 49
Overall rank on the Sunday Times Rich List: 112
YouTube / moneysupercareers
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 6. John Caudwell — Net worth: £1.5 billion
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 on the business in 2006.
Age: 64
Overall rank on the Sunday Times Rich List: 82
Tim P. Whitby / Getty
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 5. Scott Farquhar — Net worth: £1.7 billion
Where the money came from: Farquhar is one of the two co-founders of software company Atlassian.
Age: 37
Overall rank on the Sunday Times Rich List: =71
Atlassian
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 4. Mike Cannon-Brookes — Net worth: £1.7 billion
Where the money came from: Cannon-Brookes cofounded software company Atlassian.
Age: 37
Overall rank on the Sunday Times Rich List: =71
YouTube / Kelly Partners
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 3. Teddy Sagi — Net worth: £2.5 billion
Where the money came from: Sagi founded Playtech in 1999, a software company that helps power online gaming and gambling.
Age: 45
Overall rank on the Sunday Times Rich List: 45
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 2. Sir Michael Moritz and Harriet Heyman —Net worth: £2.6 billion
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: 62
Overall rank on the Sunday Times Rich List: 44
Silicon Valley’s Sequoia Capital, whose chair Sir Michael Moritz is pictured, is an investor in Rong360.Sean Dempsey / PA Archive/Press Association Images
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 1. Sir James Dyson and family — Net worth: £7.8 billion
Where the money came from: Dyson is a prolific British inventor, and famous for his high-tech hoovers.
Age: 70
Overall rank on the Sunday Times Rich List: 14
Sir James Dyson gives British Prime Minister David Cameron a tour of the Dyson factoryWPA Pool / Getty
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