Top 10 Jobs that could make you a Billionaire

5. Lawyer

Case Study: Wichai Thongtang

Country of Citizenship: Thailand

Net Worth: $1.5 billion (£1.2 billion)

‘I’m low profile but high profit,’ Winchai Thongtan once joked. And it’s completely true: the lawyer-turned investor who represented the former prime minister of Thailand, Thaksin Shinawatra, has been quietly accumulating assets for decades – mostly from his stake in hospital operator Bangkok Dusit.