M&S Sultana Bran Flakes comes first, with 337 kcal per 100g, and M&S No Added Sugar Grain Free Granola comes last, with 623 kcal per 100g. Below are all 69 M&S cereals ranked from lowest to highest calories, in seven groups.
All 9 M&S cereals in this group, ranked from lowest to highest calories. M&S Strawberry & Cherry Special Flakes comes first with 370 kcal per 100g and M&S Honey Nut Corn Flakes comes last with 398 kcal per 100g.
All 9 M&S cereals in this group, ranked from lowest to highest calories. M&S Multigrain Hoops comes first with 366 kcal per 100g and M&S Choco Hazelnut Pillows comes last with 434 kcal per 100g.
All 6 M&S cereals in this group, ranked from lowest to highest calories. M&S Sultana Bran Flakes comes first with 337 kcal per 100g and M&S Only 3 Ingredients Bran Flakes comes last with 367 kcal per 100g.
All 11 M&S cereals in this group, ranked from lowest to highest calories. M&S Raisin Almond & Honey Granola comes first with 406 kcal per 100g and M&S No Added Sugar Grain Free Granola comes last with 623 kcal per 100g.
All 8 M&S cereals in this group, ranked from lowest to highest calories. M&S Mixed Berry Muesli comes first with 349 kcal per 100g and M&S Good Gut Fruit & Multigrain Muesli comes last with 419 kcal per 100g.
All 7 M&S cereals in this group, ranked from lowest to highest calories. M&S High Protein Vegan Chocolate Crunch comes first with 418 kcal per 100g and M&S Honey & Mixed Nut Crunch comes last with 476 kcal per 100g.
All 19 M&S cereals in this group, ranked from lowest to highest calories. M&S Made Without Wheat Gluten Free Apple & Chia Overnight Oats comes first with 350 kcal per 100g and M&S Made Without Traditional Porridge Oats comes last with 398 kcal per 100g.
Calories are per 100g as sold, taken from the nutrition panels on Ocado's M&S listings. Ranking per 100g compares what each cereal is made of; serving sizes on the boxes vary, so a fair comparison needs a fixed weight.
The percentages under each cereal are for a 30g serving and change with the age and sex you pick, using the estimated daily energy requirements from the Scientific Advisory Committee on Nutrition. Milk is not included; each product page adds it.