When someone is faithful to a particular product or brand it can be difficult persuading them to swap.
Yet with the cost of living crisis impacting on household budgets, many shoppers are trying to find alternatives to the big brands.
We've already reported on people swapping their Heinz beans and soups for supermarket own brands and last week we shared how some shoppers are no longer buying Kellogg's or the other big breakfast cereal names after discovering the range at M&S.
