Who is this for?

Households buying several portions at once

If you are stocking a shared cupboard, compare fat per 100g before deciding whether a multipack’s portion size and number of servings suit your household.

Families with different dietary requirements

A bar that suits one person may not suit everyone. Check the exact pack for ingredients, allergen warnings and any dietary claims before choosing a snack to share.

Shoppers considering protein bars

Protein and fat are separate figures on the nutrition label. If reducing fat is also a priority, compare both total and saturated fat rather than choosing by the protein description alone.

What should you check?

Start with comparable nutrition figures, then work out what each person would eat and whether the exact pack suits everyone who might take a bar.

Priority What to check Your needs
Total and saturated fat Compare both figures per 100g across bars of different sizes. Business Companion’s February 2025 guidance permits a low-fat claim on solid food only at no more than 3g total fat per 100g; being lower in fat than another bar does not meet that threshold. I want to compare bars on the same basis, without mistaking a sugar, protein or wholegrain description for a statement about fat.
Portion and pack format Check the weight of one bar, whether a stated portion contains two bars, and how many portions the pack provides. Read the per-portion nutrition figure for the amount likely to be eaten. When I stock up for several people, I need to know whether the pack contains separate bars or twin-wrapped portions.
Ingredients and allergens Read the current ingredients, declared allergens and any may-contain warning on the exact variant. Check vegan or free-from wording separately; neither replaces the allergen declaration. One shared multipack needs to suit the people who will eat it, or I will need another snack for those with different requirements.
Sugars and protein Read sugars per 100g and per bar alongside fat. If protein matters, check its declared amount separately; neither a protein figure nor a less-sugar claim establishes that a bar is lower in fat. I may care about sugars or protein as well as fat, but I want to make each comparison using the relevant line of the nutrition table.

Common buying mistakes

  • Reading sugar claims as fat claims

    “Less sugar” and “no added sugar” describe different things from total fat. For solid foods, Business Companion’s February 2025 guidance sets the low-fat claim limit at no more than 3g fat per 100g.

    Check the fat and saturated-fat lines themselves before using front-of-pack wording to narrow your choice.

  • Comparing only the per-bar figures

    A 30g flapjack, a 35g fruit bar and a 50g oat bar are different-sized portions. A per-bar figure tells you about that portion, but does not put the products on an equal-weight basis.

    Compare per 100g first, then use the per-bar or twin-bar figure for the amount someone will actually eat.

  • Assuming a protein bar is lower in fat

    Eat Natural UK lists 36.3g fat and 14.1g saturated fat per 100g for its Dark Chocolate & Peanut Protein Bar. Nature Valley UK lists 29.5g fat per 100g for its Salted Caramel Nut Protein Bar.

    If protein is important to you, compare its figure and the fat figures independently on the exact product.

  • Buying one multipack without checking who can eat it

    The bars discussed here have differing ingredient and may-contain declarations. A pack format that is convenient for stocking up does not make every bar suitable for every member of the household.

    Check the current pack’s allergen declaration before ordering a quantity intended for several people.

    If the chosen bar does not suit everyone, keeping a separate snack adds to cupboard planning.

Brand and product-line references

Nutrition and allergens vary by recipe, so use these examples to identify which figures to compare on the particular bar you intend to buy.

nākd.

Fruit-and-nut bars, including Cocoa Delight.

  • nākd. lists 14g total fat per 100g for Cocoa Delight, the lowest figure among the five representative bars compared here.
  • The same nākd. nutrition table lists 43g total sugars per 100g. Check its nut ingredients and allergen warning for anyone who may eat it.

Nature Valley

Crunchy oat bars and protein bars, including an Oats & Honey family pack.

  • Nature Valley lists 20 bars in its Oats & Honey Family Pack, arranged as twin-bar portions.
  • Nature Valley lists 18.1g fat per 100g for that family pack; its Salted Caramel Nut Protein Bar has a different figure of 29.5g per 100g. Check the exact variety rather than applying one figure to the range.

TREK

Oat-based protein flapjacks, including Original Oat.

  • TREK lists a 50g bar for Original Oat, making the stated portion straightforward to compare with what will be eaten.
  • TREK lists 19g total fat and 5.0g saturated fat per 100g for Original Oat, and warns that it may contain peanuts, nuts and milk.

Graze

Oat Boost flapjacks, including Cocoa & Vanilla.

  • Sainsbury’s lists a 30g portion for Graze Cocoa & Vanilla Oat Boost, so shoppers can read its portion figure alongside the per-100g figure.
  • Sainsbury’s lists 22g fat per 100g and 6.5g per 30g portion. Its less-sugar wording does not describe the fat content.

Eat Natural

Nut-led snack and protein bars, including Dark Chocolate & Peanut.

  • Eat Natural UK lists 7.8g protein per 40g Dark Chocolate & Peanut bar for shoppers comparing protein amounts.
  • The same Eat Natural UK declaration lists 14.5g fat and 5.6g saturated fat per bar. Check the peanut and other allergen information on the current pack.

Alpen

A cereal brand whose historical bar names may still appear in shopping searches.

  • Alpen’s FAQ lists Alpen Light Bars Chocolate & Orange among products it no longer makes. Check the exact product and its current nutrition information before planning a shop around an older listing.

Snack bars on Joybuy

These fruit, cereal and oat bars offer different pack formats for a family shop. Compare the current fat and saturated-fat figures on each listing or pack before treating any of them as a lower-fat choice.

Nakd Blueberry Muffin fruit and nut bars, pack of four

Nakd Blueberry Muffin Fruit & Nut Bars, 4 × 35g

The four-bar pack is one way to stock individual fruit-and-nut snacks. Check the current fat and sugars figures alongside the nut ingredients and may-contain warning before choosing it for a shared cupboard.

View on Joybuy
Special K Dark Chocolate snacks, pack of six

Special K Dark Chocolate Snack, 6 × 21.5g

This six-pack contains 21.5g snacks. Compare its per-100g fat figure with other bars before considering the portion size, and check the current pack for wheat, barley, oats, milk and soya if those ingredients matter in your household.

View on Joybuy
Kellogg's Nutri Grain Fruity Breakfast Bars Apple, six-pack

Kellogg's Nutri Grain Fruity Breakfast Bars Apple, 6 Pack, 222g

The Apple six-pack provides another format for stocking cereal bars. Read its fat and sugars figures separately, and check the current allergen declaration before putting it in a shared snack cupboard.

View on Joybuy
Deliciously Ella Apple, Raisin and Cinnamon Oat Bars, pack of three

Deliciously Ella Apple, Raisin & Cinnamon Oat Bars, 3 × 50g

Each oat bar in this three-pack is 50g. If that portion format suits your household, compare its total and saturated fat with smaller bars on a per-100g basis and check the current may-contain warning.

View on Joybuy
Graze Oat Boosts Cherry Bakewell, pack of four

Graze Oat Boosts Cherry Bakewell, 4 × 30g

This four-pack contains 30g oat bars. Check total fat per 100g before comparing what one bar provides, and review the current ingredients and allergen warning if the pack will be shared.

View on Joybuy

Frequently asked questions

What does “low fat” mean on a UK snack bar?

For a solid food, Business Companion’s February 2025 guidance permits a low-fat claim only when the product has no more than 3g fat per 100g. The five representative bars compared above range from 14g to 36.3g per 100g according to their brand and retailer nutrition declarations, so none meets that threshold.

Does “no added sugar” or “less sugar” mean lower fat?

No. Read the total-fat figure separately: nākd. lists 14g fat per 100g for Cocoa Delight, while Sainsbury’s lists 22g per 100g for Graze Cocoa & Vanilla Oat Boost, despite their respective sugar-related descriptions.

Should I compare snack bars per bar or per 100g?

Use per 100g to compare differently sized bars on the same weight basis, then check the figure for the portion someone will actually eat. A stated portion may be a single bar or a twin-bar serving.

Does a family pack make a snack bar lower in fat?

No. A pack’s size tells you about its format, not its nutrition. Nature Valley lists 18.1g fat per 100g for its Crunchy Oats & Honey Family Pack and 7.6g per 42g twin-bar portion; check both figures against the household’s intended choice.

What should I check before buying one pack for several people?

Check the exact current pack’s ingredients, declared allergens and may-contain warnings, as well as how its bars are wrapped. Vegan or gluten-free wording on a particular variety does not replace an allergen check for each person who may eat it.