For a lower-calorie individual pack, Walkers Oven Baked Sea Salt declares 96 kcal per 22g, but it is made with potato flakes and starch rather than being a conventional potato crisp. If you want regular crisps, compare calories for the whole bag: Seabrook Lea & Perrins declares 126 kcal per 25g pack and Walkers Ready Salted 130 kcal per 25g pack. Check salt, ingredients and allergens separately; a lower calorie total does not settle those choices.
If you expect to eat the whole bag with lunch, its declared calories per pack matter more to that decision than the per-100g figure alone. Check the bag weight too: individual packs in this comparison range from 22g to 40g.
A small sealed pack lets you compare regular crisps without treating a baked potato-flake snack as the same format. Check the nutrition declaration for the flavour and pack size you are buying.
Calories are only one part of the label. Compare salt for the amount you plan to eat, and read the exact flavour’s ingredients and allergen statement before putting it in a packed lunch.
Start with the calories and weight of the bag you intend to eat, then compare product format, salt and ingredients. Per-100g figures help you compare recipes when pack sizes differ, but they do not tell you the total for a whole bag on their own.
| Priority | What to check | Your needs |
|---|---|---|
| Whole-bag calories | Read kcal per pack and the bag weight. If the label gives a smaller serving, check how many servings are in the bag; use kcal per 100g to compare different pack sizes. | I plan to eat one bag with lunch, so I want to know that bag’s total rather than mistake a serving figure for the whole pack. |
| Crisp format | Check whether the product is a conventional potato crisp or a baked snack made with potato flakes and starch. Walkers UK lists 96 kcal for its Oven Baked Sea Salt 22g pack; its Ready Salted potato crisps declare 130 kcal per 25g. | I would consider a baked snack for a lower declared pack total, but I may prefer a regular potato crisp even though these examples are not like-for-like portions. |
| Salt | Compare salt per pack and per 100g for the exact flavour. Walkers UK declares 0.17g salt and 132 kcal per 25g pack of Lightly Salted; those are separate measures. | Salt matters to me as well as calories, so I would not assume the pack with fewer calories has less salt. |
| Label information | Where traffic-light labelling is present, use it to compare the indicated nutrients, then read the nutrition table and confirm its portion size against your bag. | I want a quick way to compare packs without overlooking the serving size. In a Food Standards Agency and Ipsos Northern Ireland survey of 611 people interviewed from September to November 2024, 49% said they actively used traffic-light labelling when shopping for food; that figure is not specific to office lunches. |
| Ingredients and allergens | Read the ingredient list and any precautionary allergen statement on the exact flavour. Tesco Groceries lists milk ingredients in Real Crisps Cheese & Onion 35g; do not extend one flavour’s details across a brand. | If an ingredient or allergen affects my choice, I need the information for the pack I will actually eat, including any warning relevant to me. |
Manufacturer figures put Walkers Oven Baked Sea Salt at 96 kcal for 22g and Tyrrells Lightly Sea Salted at 208 kcal for 40g. Comparing only the two calorie totals would overlook the different amounts of food in the bags.
For the lunch you intend to pack, check the whole-bag calories first. Then use the per-100g declarations if you want to compare products at the same weight.
Walkers Oven Baked Sea Salt uses potato flakes and starch, while Walkers Lightly Salted is a conventional crisp with its own calorie and salt figures. The labels describe different attributes, not a single measure of suitability.
Decide whether format, whole-pack calories or salt is your priority, and check each figure for the named product.
Salt and ingredients differ between flavours. Tesco Groceries lists milk ingredients in its Real Crisps Cheese & Onion 35g product information.
Check salt, ingredients and allergen warnings for the exact bag, particularly if a multipack contains several flavours.
Different flavours or individual bag sizes can change what each packed lunch contains, even when the outer pack looks suitable.
Check the size and nutrition information for each included bag before deciding which one to take to work.
These examples show how individual products and pack sizes differ; a figure for one flavour should not be applied to every crisp from the same brand.
Walkers UK lists both conventional 25g potato crisp packs and a 22g Oven Baked Sea Salt snack.
Seabrook’s named conventional crisp flavours provide individual-bag examples at different weights.
Tyrrells Lightly Sea Salted is a hand-cooked crisp available in different pack formats.
KETTLE Lightly Salted provides another 40g individual-pack comparison.
Pipers describes its Anglesey Sea Salt potato crisps as seasoned with Welsh sea salt.
Real Crisps Cheese & Onion provides a 35g pack example between the smaller lunch bags and 40g packs.
These Walkers multipacks contain individual 22g–25g bags that can be packed separately for lunch. The selection includes baked snacks and conventional crisps; check each flavour’s own nutrition and allergen information rather than applying the Sea Salt baked product’s figures to other varieties.
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The 6 x 22g format offers separate bags to pack for different workdays. Check the calorie, salt and allergen information for the particular flavour you choose from the variety pack.
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Choose this 6 x 22g multipack if you want individually packed baked Cheese & Onion snacks rather than conventional crisps. Read this flavour’s own nutrition declaration and allergen statement before adding a bag to lunch.
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The individual 25g bags suit a lunch where you want a conventional crisp and are also comparing salt. Check this Mild Cheese & Onion variant’s salt and calorie declarations separately; figures for Walkers Lightly Salted do not establish this flavour’s values.
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These individual 25g bags provide a conventional crisp portion for a packed lunch. Use the Roast Chicken pack’s own calorie, salt and allergen information rather than the figures for another Walkers flavour.
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The 6 x 24g format gives you individual bags for work lunches. If salt is part of your decision, check the pack’s instructions and nutrition declaration for how the salt is supplied and counted.
Use the whole-bag kcal figure to judge the amount you expect to eat at lunch, and the per-100g figure to compare products at the same weight. The NHS notes that a manufacturer’s stated portion may differ from yours, so check whether a serving is the whole bag.
Not necessarily. Walkers UK lists potato flakes and starch for Oven Baked Sea Salt, whereas its Ready Salted crisps list potatoes and vegetable oils. If you specifically want conventional potato crisps, check the ingredients as well as the pack’s calories.
No conclusion about salt follows from the calorie figure alone. Compare both declarations for the exact pack: Walkers UK lists 0.17g salt and 132 kcal for its 25g Lightly Salted pack.
Read the exact pack’s ingredients and allergen statement, including any precautionary wording relevant to you. GOV.UK explains that food businesses must identify specified allergens when they are ingredients; a different flavour’s label is not a substitute for the one you plan to eat.
They are a starting point when present, not a replacement for checking the whole bag. Food Standards Agency guidance describes green, amber and red as low, medium and high nutrient indicators; read the detailed nutrition table as well to confirm the serving size and calories for the portion you will eat.