Joseph Brennan (73) heads up the Brennan's Bread family business, the biggest selling loaf in Ireland with a 25.
4pc market share. The ownership company is unlimited and doesn't have to file accounts. Before it became unlimited nearly a decade ago, there were sales of €62m. The family are also big property investors, owning swathes of central Dublin, including the office block at the Screen beside Trinity College and the Drury Street car park, as well as the Tiffany and Versace stores on London's Bond Street.