For a train journey, compare protein per whole bar alongside the ingredients and sweeteners. Myprotein UK lists 30g protein and 23g carbohydrate for its High-Protein Bar, which is not vegetarian or vegan; Tesco Groceries lists 21g protein for the checked Grenade 60g bar, while Barebells UK lists 20g for its 55g Cookies & Cream bar. Check the exact pack before travelling, particularly if allergens or sweeteners affect your choice.
If you want a portable bar for the journey, compare protein per whole bar and pack size rather than relying on a front-of-pack description. Tesco Groceries lists 21g protein for its checked Grenade 60g bar; Barebells UK lists 20g for its checked 55g bar.
If carbohydrate matters alongside protein, read both figures for the exact bar. Myprotein UK lists 30g protein and 23g carbohydrate for its High-Protein Bar; those figures alone do not make it a meal replacement.
Check the current flavour-specific pack for milk, soya, cereals containing gluten, peanuts, nuts, collagen and sweeteners as relevant to you. The checked products do not share the same ingredient or cross-contact statements.
Start with the serving you will actually pack, then check its nutrition panel and ingredients against your needs for the journey.
| Priority | What to check | Your needs |
|---|---|---|
| Protein per bar | Read grams per complete bar and its weight. Compare the exact flavour and serving, not figures for different pack sizes. | I want to know how much protein the bar I take on the train provides, especially if my meal timing is uncertain. |
| Sugars and carbohydrate | Check sugars, total carbohydrate and energy for the same serving. A sugars figure does not describe all its carbohydrate or sweeteners. | I may prefer a lower listed sugars figure, or I may be looking for carbohydrate alongside protein after training. |
| Sweeteners | Read the ingredient list, polyols figure where given and any pack warning. Tesco Groceries lists 18g polyols in the checked Grenade 60g bar. | If I do not know how I respond to a bar’s sweeteners, a long journey is a poor time for my first try. |
| Ingredients and allergens | Check the exact pack’s ingredients and ‘may contain’ statements, including any dairy proteins or collagen. | I need a bar that fits my own ingredient requirements, rather than assuming every flavour in a range is alike. |
Bar weights and protein figures differ. Tesco Groceries lists 21g protein per 60g for the checked Grenade bar, while Barebells UK lists 20g per 55g for Cookies & Cream.
Compare grams of protein per complete bar alongside the bar weight.
The checked Grenade bar has 1.3g sugars per bar, but Tesco Groceries also lists 18g polyols and 222 kcal for that serving.
Read sugars, polyols, total carbohydrate and energy together for the exact flavour.
Myprotein UK says its High-Protein Bar contains collagen and milk protein and is not vegetarian or vegan. The checked Grenade and Barebells packs also carry allergen or cross-contact information.
Read the current ingredient and allergen label before buying, including ‘may contain’ statements.
PhD and Barebells warn that excessive consumption of their checked bars may have laxative effects; Quest Nutrition says tolerance to sugar alcohols varies.
If you are unsure how a bar suits you, try it before a long journey and follow its labelled serving information.
These examples describe particular bars or product lines, not every flavour or pack sold under each name.
Tesco Groceries lists Grenade Carb Killa Chocolate Chip Salted Caramel as a 60g bar with 21g protein and 1.3g sugars.
PhD describes Smart Bar as an on-the-go snack. Its listed 64g Choc Brownie flavour has 21g protein and 1.2g sugars.
Myprotein UK lists 30g protein and 23g carbohydrate per High-Protein Bar.
Quest Nutrition says its OG Protein Bar line provides up to 21g protein per bar and is gluten-free.
Barebells UK lists 20g protein, 1.4g sugars and 190 kcal for its 55g Cookies & Cream bar.
Tesco is a grocery retailer. Its listing supplies the pack-level figures used here for Grenade Carb Killa Chocolate Chip Salted Caramel.
These Grenade multipacks are options to consider when packing bars for a train journey. Their flavours and pack formats differ from the single-bar examples above, so check each pack’s nutrition and ingredients rather than transferring those figures.
Image unavailableA multipack to consider if you plan to pack a bar for more than one journey. Check the Oreo Flavour pack for protein per bar, ingredients, allergens and sweeteners; the Chocolate Chip Salted Caramel figures above describe a different flavour.
Image unavailableThis 12-bar pack has 50g bars. If protein per bar is your main criterion, compare its own nutrition panel with the other bars you are considering; also check its ingredients and sweetener information before travelling.
Choose a pack you can carry and read its figures per complete bar before travelling. Compare protein, sugars, carbohydrate and ingredients for the exact flavour, then check allergens and sweetener information that matter to you.
Do not judge that from its protein figure alone. A bar’s panel tells you about that serving, but a high protein amount does not establish that it provides the variety or total nutrition of a meal.
They may affect which bar you are comfortable taking. Tesco Groceries lists 18g polyols in the checked Grenade 60g bar, and PhD and Barebells warn that excessive consumption of their checked bars may have laxative effects. If a bar is unfamiliar, try it before travelling.
Read the current pack for the exact flavour, including its ingredients and ‘may contain’ statements. The Food Standards Agency says prepacked food must have an ingredients list with allergens present emphasised; the checked Grenade and Barebells bars also carry possible cross-contact warnings.
Follow the instructions on its pack. The checked Grenade bar says to store it in a cool, dry place, while Myprotein specifies a cool, dry place out of direct sunlight.