For a small lunchbox snack, Tesco Groceries lists Myprotein Crispy Square Marshmallow at 96 kcal and 5.9 g protein per 30 g; Myprotein UK lists its 40 g Lean Layered Bar at 138 kcal and 15 g protein. Choose between them by the portion and protein amount wanted alongside the rest of lunch, then check the exact wrapper and the school’s allergy rules.
If lunch already has a main food, compare the portion of each bar rather than choosing by its protein-bar label. Tesco Groceries lists 96 kcal and 5.9 g protein for the 30 g Myprotein Crispy Square; Myprotein UK lists 138 kcal and 15 g protein for a 40 g Lean Layered Bar.
A larger bar may suit a lunch packed for a longer day or sport, but compare its per-bar energy and protein with what is already in the lunch. Norfolk and Norwich University Hospitals NHS Foundation Trust advises regular meals and snacks for teenagers, rather than relying on a single snack in place of a balanced packed lunch.
Read the exact wrapper for ingredients and precautionary allergen statements, then check the school’s policy. The Department for Education’s England allergy-safety guidance says schools should consider food brought from home when setting their arrangements.
Start with the bar’s role in the lunch, then compare its whole-bar label and any restrictions that affect whether it can be packed.
| Priority | What to check | Your needs |
|---|---|---|
| Portion and protein | Compare kcal, protein and weight per whole bar. Tesco Groceries lists 96 kcal and 5.9 g protein per 30 g Myprotein Crispy Square; Myprotein UK lists 138 kcal and 15 g protein per 40 g Lean Layered Bar. | If lunch already includes a main food, I may want a small snack. If the bar is meant to be more substantial, I can compare the extra protein with the larger portion. |
| Allergens and school rules | Read the exact wrapper, including precautionary statements, and check the school’s policy. The Department for Education’s guidance for England says schools should consider packed lunches in their allergy-safety arrangements. | Before I pack a bar, I need to know whether its ingredients and allergen statements fit the pupil’s requirements and the school’s rules. |
| Place in the lunch | Check what else is packed rather than treating protein grams as a measure of a complete meal. England’s Department for Education guidance describes a varied diet that includes fruit and vegetables, starchy foods and protein foods. | I want the bar to sit alongside a varied packed lunch, not replace it. |
| Ingredients and suitability | Check the chosen flavour for sweeteners, gelatine and dietary-suitability statements. Myprotein says its Lean Layered Bar is not suitable for vegetarians and warns that excessive consumption may have a laxative effect. | If vegetarian suitability or particular ingredients matter, I need to check the individual pack rather than rely on the brand name. |
A bar with more protein can also be a larger snack. Tesco Groceries lists its 60 g Grenade Chocolate Chip Salted Caramel bar at 222 kcal and 21 g protein, compared with 96 kcal and 5.9 g protein for a 30 g Myprotein Crispy Square.
Compare energy, protein and portion size per individual bar, then decide what role the snack has in the lunch.
Sugar information does not establish whether a bar contains an allergen or conflicts with school rules. Tesco Groceries lists milk and soya ingredients and precautionary nut and gluten statements for the researched Grenade and Myprotein examples.
Check the purchased wrapper and the school’s allergy policy before packing a bar.
A protein figure does not describe the range of foods in a packed lunch. Norfolk and Norwich University Hospitals NHS Foundation Trust advises regular meals and snacks for teenagers and a balanced packed lunch.
Pack a bar as one component alongside the other foods in the lunch, rather than in place of the meal.
Tesco Groceries cautions that food products can be reformulated, changing their nutrition, ingredients or allergen information.
Use the online listing to make a shortlist, then read the packet you buy.
Its Crispy Square and Lean Layered Bar provide two different portion and protein choices for this lunchbox comparison.
The researched Carb Killa Chocolate Chip Salted Caramel is a larger bar for shoppers prioritising its protein amount over a small snack portion.
Its featured Smart Bar is another substantial protein-bar example, rather than a small-portion comparison.
Barebells UK describes original, soft and vegan protein-bar ranges.
Quest describes its protein bars on its US site; those range descriptions do not identify the nutrition of an individual UK pack.
Tesco Groceries is a retailer reference for the researched Myprotein and Grenade listings, not the manufacturer of those bars.
These listings offer a 40 g Nature Valley peanut-and-chocolate bar and a 60 g Grenade Oreo Flavour bar to consider for a packed lunch. Compare their individual wrappers rather than applying nutrition figures from other products or flavours.
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A four-pack of 40 g bars to compare with the portion already planned for lunch. Check the wrapper for peanuts, soya and any precautionary nut statement, as well as the school’s allergy policy.
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Each bar is 60 g; compare the Oreo Flavour pack’s per-bar nutrition with the intended lunch portion. Check its wrapper for milk, soya, wheat and any age guidance before packing it for school.
Compare kcal and protein per whole bar alongside portion size. Tesco Groceries lists 96 kcal and 5.9 g protein for a 30 g Myprotein Crispy Square Marshmallow; Myprotein UK lists 138 kcal and 15 g protein for a 40 g Lean Layered Bar. Those figures describe different products and portions, so check the exact bar you intend to pack.
Use it as part of a packed lunch rather than as the whole meal. Norfolk and Norwich University Hospitals NHS Foundation Trust advises regular meals and snacks for teenagers and a balanced packed lunch; England’s Department for Education guidance describes a varied diet that includes fruit and vegetables, starchy foods and protein foods.
Yes, particularly when ingredients or precautionary allergen statements may affect the pupil or other children. The Department for Education’s allergy-safety guidance for England says schools should consider food brought from home and set clear expectations for labelling, preparation and storage.
No. Sugar information does not establish allergen or vegetarian suitability. Tesco Groceries lists milk and soya ingredients for its researched Grenade bar, while its Myprotein Crispy Square listing includes porcine gelatine. Read the exact wrapper because ingredients and allergen statements can change.