Desk workers choosing a light snack
If you want something packaged and quick to eat between meetings, compare the calories in the entire bar rather than relying on a protein claim or the per-100g figure alone.
Who is this choice for?
People prioritising protein at work
If protein matters more than choosing the smallest snack, compare grams of protein with calories per bar. Manufacturer figures for Myprotein Crispy Square and Barebells Cookies & Cream illustrate how much those two measures can differ.
Buyers checking ingredients and allergens
If you avoid particular ingredients, read the current flavour-specific label before keeping bars at your desk. Milk, soya, peanuts, other nuts, gluten and sweeteners are relevant checks across the products discussed here.
What should you compare?
Start with the amount you will eat, then decide whether a lighter snack or a greater protein contribution matters more for this break.
| Priority | What to check | Your needs |
|---|---|---|
| Calories and portion | Check kcal for one whole bar and its serving weight. Use per-100g figures only alongside the amount you plan to eat; the NHS explains that nutrition labels show energy and may also give figures per portion. | I want to know the energy contribution of the bar I will actually eat, not just a figure for 100g. |
| Protein alongside calories | Compare protein and kcal on the same per-bar basis. Myprotein UK lists 5.9g protein and 96 kcal for a 30g Crispy Square; Barebells UK lists 20g and 190 kcal for a 55g Cookies & Cream bar. | For a small snack, I may prefer the 96-kcal example. If I am choosing primarily for protein, I need to account for the larger bar’s 190 kcal as well. |
| Sugars and sweeteners | Read sugars per bar and the ingredients list separately. Check for sweeteners such as maltitol and follow any warning about excessive consumption. | Low-sugar wording alone does not tell me which sweeteners a bar contains or whether its ingredients suit me. |
| Allergens and other label details | Check the current flavour’s allergen and ‘may contain’ statements, plus saturated fat and salt. Look at the protein source and any gelatine if these affect your dietary requirements. | Before buying a different flavour or multipack, I need to check that specific product’s label rather than assume another bar from the brand has the same ingredients. |
Common buying mistakes
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Assuming ‘high protein’ means ‘low calorie’
Those claims describe different measures. Myprotein UK lists 96 kcal and 5.9g protein for a Crispy Square, while PhD lists 238 calories and 21g protein for its featured Smart Bar.
Compare both figures for one whole bar, then decide which matters more for this break.
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Treating ‘low sugar’ as an ingredients check
A bar can have little sugar and still contain sweeteners. Grenade’s White Chocolate Cookie product lists maltitol and warns that excessive consumption may cause a laxative effect.
Read the ingredients and pack warnings, particularly if you might eat more than one bar.
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Assuming similar bars have the same allergens
Ingredients and ‘may contain’ statements differ between products and flavours; the research on Myprotein, Grenade and Barebells identifies different milk, soya, gluten and nut considerations.
Check the current label for the exact flavour you intend to buy, including any dietary requirements concerning gelatine or other ingredients.
Brand references
These examples illustrate different label checks; a brand name alone does not establish the nutrition or ingredients of a particular bar.
Myprotein
Myprotein sells snack-sized and larger protein-bar formats in the UK.
- Myprotein UK lists 96 kcal, 5.9g protein and 5.1g fibre for a 30g Crispy Square.
- That Crispy Square provides less protein than the full-size examples here. Check its milk, soya and gelatine ingredients against your requirements.
PhD
PhD’s Smart Bar is an example for comparing protein and sugars with calories.
- PhD lists 21g protein and 1g sugar for its featured Smart Bar.
- The same product is listed at 238 calories, so check whether it fits the energy contribution you want from one bar.
Grenade
Grenade offers several protein-bar flavours and formats with product-specific nutrition and ingredients.
- Its White Chocolate Cookie product information gives protein and sugar figures for that particular bar.
- The White Chocolate Cookie page lists maltitol and warns that excessive consumption may cause a laxative effect. Check the exact flavour’s allergens and warnings.
Barebells
Barebells Cookies & Cream is a full-size bar for a per-bar nutrition comparison.
- Barebells UK lists 20g protein, 190 kcal and 1.4g sugars per 55g Cookies & Cream bar.
- Check its milk proteins, sweeteners and ‘may contain’ statement if ingredients or allergens affect your choice.
Quest
Quest Nutrition describes its protein-bar range as providing 20g protein and being low in sugar.
- The brand’s range information offers a starting point for checking individual bars.
- Its global range information is not a UK product label; confirm the nutrition and ingredients of the particular UK-listed bar before comparing it.
Tesco
Tesco is a grocery retailer carrying assorted protein-bar brands, rather than a single bar manufacturer.
- Its category listings provide a way to examine different pack sizes and product labels.
- Check the individual listing and pack for the flavour, serving size and ingredients you intend to buy.
Grenade bars on Joybuy
These Grenade Soft Core and High Protein Low Sugar bars offer 50g and 60g formats to consider for a desk break. Compare the nutrition for an individual bar, even when buying a multipack.
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Grenade Soft Core Protein Bar Double Chocolate, 12 x 50g
For a quick desk snack, compare the energy and protein for one 50g bar. Check the current ingredients for milk, soya and maltitol before buying.
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Grenade Soft Core Protein Bar Golden Caramel, 12 x 50g
Use the per-bar figures when weighing this 50g Golden Caramel variant against other desk snacks. Its ingredient checks include milk, soya and maltitol.
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Grenade Soft Core Protein Bar Peanut Butter, 12 x 50g
Compare nutrition per 50g bar rather than per multipack. This Peanut Butter variant contains peanuts, milk and soya; check its current label if you need to avoid them.
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Grenade High Protein Low Sugar Protein Bar Oreo Flavour, 4 x 60g
If protein and sugars are your priorities, check their figures alongside the energy in one 60g bar. This variant lists wheat, milk and soya among its ingredient considerations.
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Grenade High Protein Low Sugar Protein Bar White Chocolate Salted Peanut Flavour, 12 x 60g
Check energy and protein for one 60g bar if you are balancing a calorie-conscious break with a protein priority. This flavour contains peanuts, milk and soya.
Questions about choosing a bar
What should I compare first on a protein-bar label?
Compare kcal and protein for the whole bar you expect to eat, then check its serving weight, sugars, saturated fat and salt. The NHS explains that nutrition labels give energy and other nutrient figures, which may also be shown per portion.
Is a bar below 100 kcal enough for a desk lunch break?
It can suit a light snack, but its protein contribution may differ considerably from a larger bar. Myprotein UK lists 96 kcal and 5.9g protein for a Crispy Square; Barebells UK lists 190 kcal and 20g protein for Cookies & Cream. Compare both figures with what you want from that break rather than treating either bar as a complete lunch.
Does ‘low sugar’ mean a bar contains no sweeteners?
No. Check the ingredients separately from the sugars figure. Grenade lists maltitol for its White Chocolate Cookie bar, while Barebells Cookies & Cream lists maltitol and sucralose.
What if a bar warns about excessive consumption?
Follow the warning on that product’s pack, especially before eating multiple bars. Grenade states that excessive consumption of its White Chocolate Cookie bar may cause a laxative effect.
Can I use another flavour’s allergen information?
No. Read the ingredient, allergen and ‘may contain’ statements for the exact bar and flavour you intend to buy. The Myprotein, Grenade and Barebells examples have different ingredient and allergen considerations.