CO2 Emissions and Fuel consumption:
http://www.smmt.co.uk/co2/co2search.cfm

Company Cars and the Inland Revenue:
http://www.inlandrevenue.gov.uk/cars/

Driver Licensing:
http://www.dvla.gov.uk/welcome.htm

Vehicle List prices Indicative ppm costs:
http://www.glass.co.uk/uk/en/