Cenex, the UK's first Centre of Excellence for low carbon and fuel cell technologies, reports the results from a six month fleet electric vehicle trial. The study focuses on, and refers to vehicle performance in five private sector fleets. On board telemetry and data logging record key parameters which allow monitoring and reporting of usage patterns and energy consumption. The paper demonstrates the effect of duty cycle of candidate case studied organizations and the low ambient temperatures observed during the trial on range. The study quantifies the utilization patterns of the EVs, journey statistics, range, CO2 emissions and explores the links between range, auxiliary power use and ambient temperature. A questionnaire issued to EV users during the trial quantifies perception of performance and fleet integration aspects as well as looking at the importance of different aspects of EV purchasing decisions. Finally, the report asks users to quantify the premium cost they would be willing pay for an EV and the minimum range they would consider as acceptable from an electric vehicle.