Choose a desk-lunch snack bar by the specific ingredient or allergen you need to avoid, not by a broad free-from or vegan claim. Check the current pack’s ingredients, highlighted allergens and any ‘may contain’ statement before comparing flavours or nutrition: a gluten-free bar can still contain milk or peanuts.
A portable bar can fit a short break, but an oat-based or vegan description alone does not establish that it meets both requirements. nākd. describes its fruit-and-nut bars as gluten-, wheat- and dairy-free and suitable for vegans; check the particular flavour and pack.
If protein per bar matters, compare the stated amount alongside the full allergen declaration. TREK Original Oat states 10g plant protein per bar, while Nature Valley Protein Peanut & Chocolate states around 10g per 40g bar; their other ingredients and precautionary warnings still matter.
Shared snack supplies make the exact wrapper important. The Food Standards Agency says allergens present in UK prepacked food must be emphasised in the ingredients list; a separate ‘may contain’ statement communicates possible unintended allergen presence.
Start with the restriction that determines whether you can choose the bar at all. Then compare the nutrition and portion size of the options that fit.
| Priority | What to check | Your needs |
|---|---|---|
| Specific allergens | Read the current ingredients list for highlighted allergens. Check any separate ‘may contain’ statement for possible unintended presence; the Food Standards Agency distinguishes this from ingredients used in the recipe. | I need to know whether the bar contains an allergen I avoid, and whether its wrapper warns about possible cross-contact. |
| Gluten-free claim | Look for an explicit gluten-free claim on the particular product rather than inferring suitability from an oat-based name. Check the current flavour and pack. | If I avoid gluten, an oat bar’s name is not enough for me to select it. |
| Vegan and dairy-free fit | Check the exact vegan or dairy-free wording, milk in the ingredients list and any ‘may contain milk’ statement. A vegan claim does not settle a milk-allergy question. | I may want a bar without animal-derived ingredients, or I may need to avoid milk; those are different checks. |
| Portion and nutrition | Compare protein, fibre, sugars and saturated fat using the same basis, such as per bar or per 100g. Note the bar’s weight before comparing two packs. | For a short lunch break, I want to know what one bar provides rather than judging it by a protein or free-from label alone. |
A gluten-free or vegan bar can contain other allergens. Nature Valley Protein Peanut & Chocolate contains peanut, soya and milk, according to Nature Valley UK.
Begin with the allergen you need to avoid. Read the exact bar’s ingredients and any ‘may contain’ wording before comparing flavours or protein.
The Eat Natural Peanuts, Coconut & Dark Chocolate bar is labelled vegan, but its Tesco Groceries listing says it may contain milk.
Check milk in both the ingredients and precautionary statement on the current pack; do not rely on the vegan label alone.
Protein and fibre figures describe only part of a bar’s nutrition. Action on Salt & Sugar’s November 2025 review classified 64% of 458 snack bars sampled across 10 major UK retailers as ‘less healthy’ under the Government’s Nutrient Profiling Model; that product review does not classify every bar bearing a particular claim.
Compare the nutrition panel and portion size of the specific bars you are considering, including sugars and saturated fat.
Nature Valley UK describes selected Protein bars as gluten-free; that does not establish the status of every Nature Valley bar. A brand name cannot stand in for a flavour-specific allergen declaration.
Choose by the full product name and recheck the pack when buying it again.
These brand references describe particular ranges or products, not a free-from guarantee for everything bearing the brand name.
Graze says all its snacks are vegetarian and most are vegan; its range includes oat flapjacks.
Selected Protein bars are relevant to shoppers comparing gluten-free bars with a stated protein amount.
Alpen’s allergy information is a reason to check a specific product rather than assume the brand meets a gluten-free snack-bar requirement.
Eat Natural lists gluten-free bars, including fruit-and-nut varieties; check each flavour’s separate claims.
nākd. describes its fruit-and-nut bars as suitable for vegans and gluten-, wheat- and dairy-free.
TREK offers oat-based protein bars; its Original Oat product is described by TREK as vegan and gluten-free.
These bars offer fruit-and-nut and protein-flapjack options for a desk break. Their pack sizes and flavours differ; use the exact product’s current allergen declaration to decide whether it fits your free-from requirement.
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A multipack of cocoa oat flapjacks for keeping desk snacks to hand. Check this flavour’s gluten-free and vegan claims, soya ingredients and any precautionary milk or nut wording on the current pack; claims for TREK Original Oat do not automatically apply to Cocoa Oat.
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A nut-flavoured protein bar to compare with other 40g portions. If you need a gluten-free or dairy-free option, check this Salted Caramel Nut variant’s own claims and allergen list rather than applying the details of Nature Valley’s Peanut & Chocolate bar to it.
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A fruit-and-nut choice for shoppers considering the vegan, gluten-, wheat- and dairy-free positioning that nākd. gives its fruit-and-nut range. Check Blueberry Muffin’s ingredients and ‘may contain’ statement if nuts or other allergens matter to you.
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Three 50g flapjacks offer another oat-based protein format for a desk break. Check this Salted Caramel variant’s gluten-free and vegan wording, ingredients and full ‘may contain’ statement on the current pack before choosing it for a dietary restriction.
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Nature Valley UK describes this bar as gluten-free, with around 10g protein and 4g fibre per 40g bar. It contains peanut, soya and milk and may contain tree nuts; its gluten-free claim does not make it suitable for people avoiding those allergens.
No. A vegan claim concerns the intended ingredients, while a separate precautionary statement can warn of possible milk presence. Tesco Groceries lists the Eat Natural Peanuts, Coconut & Dark Chocolate bar as vegan but says it may contain milk; check the current pack if milk allergy is relevant.
No. If gluten-free status is required, look for an explicit claim on the exact product and check its current pack. TREK describes Original Oat as gluten-free, but an oat-based name alone does not establish that claim for another bar.
It is precautionary allergen labelling about possible unintended allergen presence, separate from ingredients deliberately used in the recipe. Food Standards Agency guidance says such wording should be used where an unavoidable cross-contamination risk remains.
Read the ingredients list, where allergens present in UK prepacked food must be emphasised each time they appear, according to the Food Standards Agency. Then read any separate precautionary allergen wording on the current wrapper.
Protein content alone cannot tell you whether a bar meets what you want from lunch. Compare the whole portion and its nutrition panel with the food you plan to eat alongside it; Nature Valley UK, for example, states around 10g protein per 40g Peanut & Chocolate bar, which is a protein figure rather than a complete description of the meal.