Supermarkets employ a range of selling techniques to persuade shoppers into spending more. By studying the way shoppers travel through a space and taking advantage of psychological methods to direct people through a specific route, supermarkets are able to maximise the amount of money they take.

Techniques range from making checkout queues tighter, with products within reach of eager children to placing specific products at eye height on shelves to bring more attention to them.

We look at an assortment of supermarket secrets, selling tactics and shopping tips - just in time for Christmas!