Weekly shoppers comparing protein
If you are stocking up on bars, compare the protein in one bar as well as its size. That makes packs with different bar counts easier to assess against the snacks you plan to eat.
Who is this for?
Plant-based snack-bar shoppers
TREK lists separate 9g Protein Flapjack and 15g High Protein ranges, while Tesco lists 7.6g protein in a 45g nākd. Peanut Butter bar. Check the exact range and flavour rather than applying one bar’s figures to another.
Shoppers checking nutrition or allergens
Protein is only one part of the label. Compare sugars and saturates on the exact pack, and read its ingredients and allergen warnings if you need to avoid nuts, soya or milk.
What should you compare?
Start with what one bar provides, then compare bars of different sizes using their per-100g labels. Check dietary suitability before settling on a multipack.
| Priority | What to check | Your needs |
|---|---|---|
| Protein | Check grams per bar and the bar’s energy value. The annex to Regulation (EC) No 1924/2006, published by legislation.gov.uk, specifies that at least 20% of a food’s energy must come from protein for a “high protein” claim. | I want to know what one snack provides, rather than relying on “protein” in its name. |
| Other nutrients | Compare energy, sugars, saturates and salt per bar and per 100g. Use traffic-light information where the pack provides it, alongside the full panel; the NHS identifies these nutrients as label information. | A multipack has to fit what I am looking for beyond its protein figure. |
| Diet and allergens | Read the exact flavour’s ingredients, dietary claims and “may contain” statements. Nut, soya and milk declarations differ between the Nature Valley, Eat Natural and nākd. examples. | I need to check the particular bar I am buying, not assume that a plant-based or gluten-free label answers every allergen question. |
| Pack format | Check the number of bars and grams per bar. The listed examples include 3 × 40g Eat Natural, 3 × 45g nākd., 3 × 50g TREK and 4 × 40g Nature Valley packs. | I want a pack with enough individually wrapped bars for the snacks I have planned during the week. |
Common buying mistakes
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Assuming every “protein bar” qualifies as high protein
A bar can contain several grams of protein without meeting the energy-share condition for a “high protein” claim.
Compare protein and energy on the exact nutrition panel; legislation.gov.uk publishes the claim condition of at least 20% of energy from protein.
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Looking at protein but not the rest of the label
In its November 2025 review of 458 snack bars from 10 major retailers, Action on Salt & Sugar classified 55% as high in saturated fat and 37% as high in sugars under UK front-of-pack thresholds. Those figures do not classify any particular bar.
Compare sugars and saturates per bar and per 100g for the exact flavour you intend to buy.
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Assuming a dietary claim covers allergens
A vegan or gluten-free description does not establish that a bar is free from nuts or soya. Tesco lists its vegan nākd. Peanut Butter bar as containing peanuts and potentially containing soya and other nuts.
Read the ingredients, allergen declaration and precautionary wording on the particular pack.
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Judging a multipack by its bar count alone
Three-bar packs in the cited Tesco listings contain bars weighing 40g, 45g or 50g, so the same bar count can represent different portion sizes.
Check both the count and individual bar weight against the snacks you plan for the week.
Brand references
These examples describe particular bars or ranges, not every product made by each brand.
Nature Valley
Nature Valley UK lists its Protein Salted Caramel Nut bar in a 4 × 40g format.
- The manufacturer declares 10.4g protein and 4.3g fibre per 40g bar.
- The same bar lists 6.4g sugars and 2.8g saturates per bar; its ingredients include peanuts, soya, almonds and milk.
TREK
TREK describes separate plant-based Protein Flapjack and High Protein ranges.
- TREK states that its Protein Flapjacks provide 9g plant-based protein and its High Protein range provides 15g; check which range a pack belongs to.
- Range-level figures do not replace the nutrition and allergen panel for a specific flavour.
Eat Natural
Tesco lists Eat Natural Peanuts, Almonds & Salted Caramel protein bars in a 3 × 40g pack.
- Tesco’s panel declares 10.4g protein and 2.2g fibre per 40g bar.
- Its listed ingredients include peanuts, soya and almonds. Check the full pack for allergen declarations relevant to you.
nākd.
Tesco lists the Peanut Butter bar as a vegan, gluten-free, dairy-free option with no added sugar.
- The listed 45g bar provides 7.6g protein and 6.8g fibre.
- It contains peanuts and may contain soya and other nuts; its protein figure is not interchangeable with those of TREK’s separate ranges.
Joybuy snack-bar options
These options cover Nature Valley nut bars, an Eat Natural peanut-and-chocolate bar and a TREK flapjack. Compare each exact pack’s label with the protein level, portion size and ingredients you need.
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Nature Valley Protein Salted Caramel Nut, 4 × 40g
The four-bar format offers individually portioned snacks for the week. Nature Valley UK declares 10.4g protein, 4.3g fibre, 6.4g sugars and 2.8g saturates per 40g bar; check the peanut, soya, almond and milk ingredients.
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Nature Valley Protein Peanut & Chocolate, 8 × 40g
The eight-bar format is an option if you are planning several snacks across the week. Compare the exact pack’s per-bar nutrition and allergen statement with other peanut-and-chocolate bars.
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Nature Valley Protein Peanut & Chocolate, 4 × 40g
This four-bar pack offers a different count from the eight-bar Peanut & Chocolate pack. Check the nutrition and allergen declarations on this exact variant rather than assuming both packs have identical details.
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Eat Natural Protein-Packed Peanuts and Chocolate, 3 × 40g
For a weekly shop, compare this three-bar pack’s protein and other nutrients per 40g bar with the nut-bar alternatives. Check the ingredients and allergen wording for this peanut-and-chocolate recipe.
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TREK Salted Caramel Protein Flapjacks, 3 × 50g
This plant-based flapjack format has three 50g portions. Check protein, sugars, saturates and allergens on the Salted Caramel pack itself; TREK’s figures for its separate High Protein range should not be applied to this flapjack.
Frequently asked questions
What does “high protein” mean on a snack bar?
The annex to Regulation (EC) No 1924/2006, published by legislation.gov.uk, specifies that protein must provide at least 20% of a food’s energy for a “high protein” claim. A protein figure in grams alone does not establish that energy share, so check the exact bar’s nutrition panel.
Should I compare protein per bar or per 100g?
Use protein per bar to see what one snack provides, then use per-100g figures to compare bars of different weights. Check energy, sugars and saturates alongside protein; the NHS identifies these as information on prepacked-food nutrition labels.
Does a protein-focused label tell me about sugars and saturates?
No. Read the exact bar’s nutrition panel. Action on Salt & Sugar’s November 2025 review of 458 snack bars from 10 major retailers classified 55% as high in saturated fat and 37% as high in sugars under UK front-of-pack thresholds; those group figures do not determine the rating of an individual bar.
Are vegan protein bars free from nut and soya allergens?
Not necessarily. Tesco lists the vegan nākd. Peanut Butter bar as containing peanuts and potentially containing soya and other nuts. Check the ingredients and “may contain” wording on the exact pack you plan to buy.
How do I choose a multipack for the week?
Decide how many bars you plan to use, then check both the pack count and grams per bar. Compare the nutrition and allergens of the exact flavour before buying several portions of it.