Name: Amy Mason and Tom Makin
Age: Amy, 29, and Tom, 28
Net worth: £25 million
Company: Footasylum
Industry: Retail
Siblings Mason and Tom Makin each have a 7.47% stake in shoe retailer Footasylum, which was cofounded by their father David Makin. With more than 65 stores, Footasylum has a market capitalisation of £165 million.