This document summarizes research into how UK consumers approach online shopping and their use of voucher codes. It finds that while the consumer decision making process hasn't fundamentally changed, consumers now take varied routes and seek multiple options to find the best value. Voucher code usage has increased and users have a varied demographic profile. Voucher codes can drive satisfaction if the experience is simple, but bad sites that are cluttered or don't deliver can negatively impact users. Overall, voucher codes can be an effective customer acquisition and retention tool if implemented correctly with a focus on engagement and relevant offers.