“They have a coloured sticker policy,” explains Williams. “You get five red item stickers, which are meat and cheese and frozen fish. Then you get ten blue items, which is your pasta and tins of beans, etc, and toiletries. Then you get three items that are fruit, vegetables and bread.
Article source: https://www.huffingtonpost.co.uk/entry/parents-struggling-summer-holidays-cost-of-living-crisis_uk_62f61863e4b0ab35e0b20203