code, simply enter the code at the online checkout and watch the pounds get sliced off! 6. Buying directly through the retailer Similarly, if you're shopping online, paying directly through the retailer's website is a big no-no if you want to save a few pounds. Instead, make sure you use a cashback website such as Quidco , TopCashBack , and GreasyPalm . Then, whenever you want to make a purchase, check whether that particular retailer is listed on your chosen cashback website. If it is, click on the affiliate link shown. This will take you through to the retailer's site and you can then make your purchase as usual. Your transaction will be tracked and the retailer will pay the cashback site for introducing you as a customer. The cashback site then passes that payment onto you. Simple. So whenever you decide to start your big Christmas shop, make sure you pay in the right way!