Net worth: £3.5 billion ($5.3 billion)
Ages: 63, 65
Green (middle in this picture, next to actress Kate Bosworth and his daughter Chloe) owns some of the most popular fashion retailers in Britain. He bought British Homes Stores for £200 million in 2000 and a year later, BHS was worth £1.2 billion. Through the retail group he acquired, Arcadia, which is owned by his wife Lady Tina. Arcadia owns Topshop, Topman, Burton, Dorothy Perkins, and Miss Selfridge. The Green family's stake in Arcadia is worth £1.9 billion while the Sunday Times added £1.6 billion for property, yachts, and past dividends.