Dale Vince spent ten years living in a caravan on a Stroud farm, and after teaching himself how to build his first wind turbine, went on to found the green electricity company Ecotricity, which is now worth over £100 million. He was awarded an OBE 2004.
He continues to be an outspoken advocate for the environment and maintains a personal blog Zerocarbonista in which he regularly writes about what he considers to be the three main environmental issues facing the world: energy, transport and food.
In 2010 he became the major shareholder in Forest Green Football Club, and introduced a range of environmental and vegetarian measures, including removing all red meat from sale within the ground.
Watch his recent Carpool interview with Robert Llewellyn below.
Photo by Adrian Sherratt