If reducing total fat is your priority, compare snack bars per 100g rather than assuming that a lower-sugar or protein bar is also low fat. UK nutrition-claim guidance from Business Companion sets the low-fat limit for solid foods at no more than 3g fat per 100g; the oat, nut and protein bars compared here exceed it. For a night-shift break, consider the portion size and any dietary requirements alongside the fat and saturates figures.
If you want something portioned to take on a shift, compare bar size as well as its nutrition panel. The British Dietetic Association discusses lighter meals or snacks during night shifts but does not prescribe one eating schedule for every shift worker.
A sugar, fibre or protein claim does not tell you whether a bar is low fat. Compare total fat per 100g: Business Companion’s UK guidance permits a low-fat claim on a solid food only at no more than 3g fat per 100g.
If protein, vegan or gluten-free suitability matters, check those details on the exact bar without skipping its fat figure and allergen statement. Recipes differ, particularly among nut and protein bars.
Start with total fat on a common per-100g basis, then check the portion and any requirements that could rule out a bar.
| Priority | What to check | Your needs |
|---|---|---|
| Total fat | Compare total fat per 100g, then read saturates separately. Business Companion’s UK guidance sets the low-fat claim limit for solid foods at 3g fat per 100g. | I’m looking to reduce total fat, so a claim about less sugar or more protein does not answer my main question. |
| Label detail | Use the nutrition panel for the figures you need; traffic-light colours, where shown, are a separate quick reference. Check what any front-of-pack claim actually compares. | I want to make sense of the label before choosing. In the Food Standards Agency’s 2024 Northern Ireland survey of 611 food shoppers, 49% said they actively used traffic-light labelling when shopping for food; this was not a survey of night workers or snack-bar buyers. |
| Portion | Check the bar’s weight and its per-bar information as well as per-100g figures. Plan when you can take a break rather than treating the bar as your whole shift’s food. | A portioned snack is useful for my break. The British Dietetic Association discusses lighter meals or snacks at night without setting one eating time for everyone. |
| Dietary fit | Read the exact pack’s ingredients, allergen statement and any protein or free-from claims. Recheck the wrapper if you have a strict requirement. | Protein or a particular ingredient exclusion may matter to me, but I also need to know whether this recipe contains an allergen I must avoid. |
These claims describe different nutrients. Waitrose & Partners lists 19g fat per 100g for Graze Banana Bread Oat Boosts despite its less-sugar message.
If fat is your priority, compare the total-fat figure per 100g before considering the sugar claim.
Protein does not establish a bar’s fat content. Eat Natural lists 36.3g fat per 100g for its Dark Chocolate & Peanut Protein Bar, while Joybuy’s nutrition listing gives 28.3g per 100g for Nature Valley Protein Peanut & Chocolate.
Compare the exact bars on the same per-100g basis, then decide whether their protein content meets a separate need.
Fruit-and-nut and protein bars can contain different allergens. Joybuy lists peanuts, soya and milk in Nature Valley Protein Peanut & Chocolate; Tesco lists peanuts as an ingredient in nākd. Peanut Delight.
Read the current wrapper for the bar you intend to pack, including any may-contain statement.
A portioned bar can serve as a break snack, but it does not settle when or what else to eat. The British Dietetic Association says evidence is not strong enough to prescribe one optimal eating time for all shift workers.
Plan the bar alongside the meals and breaks that work with your shift, rather than treating its label as a complete meal plan.
These examples show why the exact recipe and nutrition panel matter more than the type of bar printed on the wrapper.
Oat Boost flapjacks offer a 30g-bar format in the reviewed Banana Bread and Cherry Bakewell packs.
The reviewed Protein Peanut & Chocolate bar is a protein-led option.
Peanut Delight is a fruit-and-nut bar rather than an oat or protein-flapjack format.
The reviewed Original Oat Protein Flapjack comes as a 50g bar.
The reviewed Dark Chocolate & Peanut Protein Bar is a peanut-led recipe.
A “Light” name is not a substitute for checking total fat on an exact bar.
These protein bars and one oat flapjack are options for a portioned night-shift snack. Compare each exact pack’s total fat per 100g if reducing fat is your main aim; the selection is not a list of bars that qualify for a UK low-fat claim.
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A 50g portion to take on a shift break. Check the current pack’s total fat and saturates per 100g if fat reduction is the deciding factor; check its milk and soya allergen information.
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Another 50g-bar pack for portioning into work breaks. Compare its own per-100g fat figure rather than assuming it matches the Double Chocolate variant, and check the milk and soya allergen information.
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The Peanut Butter variant comes in 50g bars. Check its per-100g nutrition panel for the fat comparison, and read the current pack’s peanut, milk and soya allergen information.
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These 60g bars are a different portion size from the 50g Grenade variants above. Compare fat per 100g rather than relying on the protein or sugar wording, and check the pack for milk, soya and gluten-containing ingredients.
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A 30g oat-flapjack option if you prefer a smaller bar for a break. Tesco Groceries lists 22g fat per 100g for this pack; check the current wrapper’s nutrition and allergen information before choosing it for a fat-first or dietary requirement.
Business Companion’s UK nutrition-claim guidance says a solid food may carry a low-fat claim only if it contains no more than 3g fat per 100g. Use the per-100g panel to compare bars of different sizes, then check the per-bar portion separately.
No: the claims concern different nutrients. Waitrose & Partners lists 19g fat per 100g for Graze Banana Bread Oat Boosts, while Tesco Groceries lists 22g per 100g for Cherry Bakewell Oat Boosts; check sugar, total fat and saturates individually.
Choose by the nutrition and ingredients that matter to you, not protein wording alone. Nature Valley lists 10g protein per Peanut & Chocolate bar, while Joybuy lists 28.3g fat per 100g for it; Myprotein UK lists 10.2g protein per 50g Trek Original Oat Protein Flapjack and 19.6g fat per 100g.
A portioned bar can be a planned break snack. The British Dietetic Association discusses possible benefits of lighter meals or snacks during night shifts but says the evidence does not establish one optimal eating time for every shift worker.
Read the exact current wrapper, including ingredients and may-contain statements. Joybuy lists peanuts, soya and milk for Nature Valley Protein Peanut & Chocolate, while Tesco Groceries lists peanuts in nākd. Peanut Delight; another flavour or brand may have a different statement.