For useful tax information, click on the one of the following links:

Inland Revenue: Expenses and Tax Guide
This link takes you to a guide to tax and national insurance contributions and treatment of company cars for employees and employers. It also outlines tax changes as of April 2002.

Benefits for Vehicles with low Co2 Emissions Figures
A useful link taking you to this aspect of taxation for low emission cars.

CO2 Emissions Finder
This site allows you to identify exact CO emissions ratings of any vehicle.