
Ranking: 46
Worth: £200m (303m)
Industry: Day trading
The Dubliner, based in Texas, made £253m weeks before the dotcom bubble burst, selling CyberCorp, a day trading company, to Wall Street giant Charles Schwab. He donated £52m to his own charity, Glimmer of Hope, to help those in developing countries.
Ranking: 34
Worth: £201m
Industry: Day trading