Start with fat per 100g rather than the protein claim on the front of a cereal bar. Business Companion lists a limit of 3g fat per 100g for a ‘low-fat’ claim on solid foods; the Nature Valley, Graze and Eat Natural protein-oriented examples discussed here contain 25g to 42.2g fat per 100g. They may suit someone prioritising a convenient protein snack, but none is a choice for someone requiring a bar that meets that low-fat benchmark.
Check fat per 100g before comparing protein per bar. The Nature Valley, Graze, Eat Natural and Kellogg’s examples discussed below all exceed the 3g-per-100g threshold that Business Companion lists for a low-fat claim on solid foods.
A protein-labelled bar may be convenient if its fat content fits your own plans. Compare nutrition per 100g, then check what the portion you intend to eat provides; bar sizes differ.
Read the current ingredients and allergen statements for the exact flavour and pack. The protein-oriented examples discussed here include products containing peanuts, soy or milk, and some carry precautionary nut statements.
Decide whether low fat is a firm requirement, then compare products on the same per-100g basis before considering the size of each bar.
| Priority | What to check | Your needs |
|---|---|---|
| Fat content | Read total fat per 100g. Business Companion lists no more than 3g per 100g for a low-fat claim on solid foods; also check fat in the portion you plan to eat. | I need a bar that meets a strict low-fat benchmark, rather than one that merely has a small-looking per-bar figure. |
| Protein | Compare protein per 100g and per bar. Check the bar’s weight so that different portion sizes do not distort the comparison. | If protein is my main reason for choosing a bar, I still want to see how much fat comes with that serving. |
| Full nutrition panel | Look at energy, sugars and saturated fat alongside protein and total fat, using both per-100g and per-serving figures. | A protein claim alone does not tell me whether the whole bar fits what I plan to eat. |
| Ingredients and allergens | Check the exact pack’s ingredients, highlighted allergens and any ‘may contain’ statement, especially for nuts, soy, milk and cereals containing gluten. | Before choosing a flavour, I need to know whether its ingredients and allergen information fit my restrictions. |
Nature Valley UK lists 25.6g protein and 28.3g fat per 100g for its Protein Peanut & Chocolate bar. A prominent protein figure does not establish that the bar is low in fat.
Set your fat requirement first, then compare the nutrition panel with it. If you require the low-fat claim benchmark listed by Business Companion, this example does not meet it.
The cited Kellogg’s bar is a 27g portion, while the cited Graze flapjack is a 54g portion. Per-bar figures therefore describe different amounts of food.
Compare protein and fat per 100g first, then use the serving figures to assess the portion you would actually eat.
A cereal-bar appearance does not reveal every ingredient. The cited Nature Valley protein bar contains peanut, soy and milk ingredients and may contain tree nuts.
Read the ingredients, highlighted allergens and precautionary statements on the exact pack, including when changing flavours.
A protein claim describes one aspect of a product, not its total fat, saturated fat or sugars.
Read the full nutrition declaration and portion size before deciding whether the bar fits your requirements.
These figures describe the named products, not every bar made by each brand; check the current pack for the flavour you choose.
Nature Valley UK lists 10.2g protein per 40g bar for Protein Peanut & Chocolate.
Tesco lists 9.0g protein per 54g portion for the Graze Cocoa Vanilla protein flapjack.
Tesco lists 8.0g protein per 40g bar for Eat Natural Maple Syrup, Pecans & Peanuts.
Kellogg’s UK lists 1.7g fat and 1.4g protein per 27g Special K Red Berry Bar.
These options include protein snack bars and a Nature Valley cereal bar. Compare the current nutrition and allergen information for each flavour before choosing one for a low-fat eating plan; a protein or low-sugar name does not establish low fat.
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A high-protein, low-sugar-labelled snack bar in a 12 x 60g pack. Check the flavour’s current fat per 100g and allergen statement against your requirements.
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This high-protein, low-sugar-labelled flavour comes as four 60g bars. Compare its current per-100g fat figure and ingredients with the other flavours rather than assuming they have the same recipe.
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This high-protein, low-sugar-labelled option comes as twelve 60g bars. Check its current fat declaration and peanut-related allergen information before selecting it.
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A nut bar in four 40g portions for shoppers considering a protein-labelled cereal snack. Check this Salted Caramel variant’s own nutrition and allergen declaration; figures for Nature Valley Peanut & Chocolate do not describe it.
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A protein-labelled dark chocolate nut bar in the stated 3 x 42g x 6pcs configuration. Compare its current fat per 100g and read the nut and other allergen information for this exact product.
No. Nature Valley UK lists 28.3g fat per 100g for Protein Peanut & Chocolate, while Tesco lists 25g for Graze Cocoa Vanilla protein flapjack and 42.2g for Eat Natural Maple Syrup, Pecans & Peanuts. Each exceeds the 3g-per-100g limit that Business Companion lists for a low-fat claim on solid foods, despite supplying protein.
Not on its own. Compare the bar’s protein with its fat, energy and portion size, as well as the rest of what you plan to eat. The British Nutrition Foundation notes that, on average, people in the UK already consume more than enough protein and recommends obtaining it from a range of foods.
Read the exact pack for peanuts, tree nuts, soy, milk and cereals containing gluten, as relevant to your restrictions. The cited Nature Valley Peanut & Chocolate product contains peanut, soy and milk and may contain tree nuts; other flavours and brands need their own label check.
Use it to compare options, but check the current physical pack when nutrition or allergens are decisive. Product recipes and declarations can change, and the figures for one flavour should not be transferred to another.