We look at the records of how the UK’s largest grocery stores – and manufacturers – have been paying their suppliers and wonder if the recent changes to help suppliers will stick around. related to Aldi, Arla Foods, Asda, Bakkavor, Greencore, HJ Heinz, Kellogg, Lidl, Marks and Spencer, Mars, McCain Foods, Mondelez International, Morrisons, Muller, Nestlé, PepsiCo, Premier Foods, Sainsbury’s, Tesco, Unilever, United Biscuits, Waitrose,