M&S Food is sold online through Ocado, so this is where to compare M&S prices: thousands of M&S products priced next to every other supermarket. Ocado is the UK's online-only supermarket, carrying tens of thousands of products across groceries, beer, wine and spirits, health and beauty, baby, pet, household and home. Its prices and Low Price Promise lines move week to week, and the single-item Now/was offers and multibuys can beat the big four on national brands. We track Ocado prices across the full catalogue every day so you can spot the biggest drops before you shop. Compare Ocado against Tesco, Sainsbury's, ASDA, Morrisons and Waitrose in seconds and check whether an Ocado price genuinely wins this week. If an Ocado deal is worth it, it will show up below.