Professional Used Car Underwriters to the Trade. With over 475 years of combined experience, our 17 underwriters aim to get the best possible price for your part exchanges. Unlike traders we never take a profit out of the vehicle - we only charge a 0.75% commission once a deal as been fully completed. We underwrite an average of 2,800 vehicles a month, from £2,000 to £100,000 meaning we are continually updating or knowledge of market movements.