Stewart Kenny is not your standard bookie. The Glenstal-educated son of a High Court judge is the entrepreneurial genius who thought gambling could be turned into something fun, mainstream and highly profitable. He co-founded Paddy Power (now Paddy Power Betfair), Europe's most valuable gambling company. He still owns shares in the company and has also cashed in stock worth more than 20m. Between dividends, pay, rent and consultancies, there's 10m more.