Barry Houlihan
Age: 34
Company: Mobile Interactive Group
Houlihan carries around a notebook in which he jots down his business ideas. As his two-year-old Mobile Interactive Group made £21m this year, it would well be worth peering over his shoulder. Founded from a division of O2, Houlihan puts his company’s success down to the core staff he took with him and the speed with which they develop mobile-based technology. Deals with ITV, Freemantle and Celador are in place, and he admits that pacing the company’s growth has been like “holding onto a wild horse”