Who might consider each option?

Shoppers seeking less sugar in a familiar biscuit

If you want a wheatmeal digestive with your afternoon tea, compare sugars per 100g rather than assuming a reduced-sugar claim also means low sugar.

Shoppers considering sugar-free biscuits

If the sugars figure is your main concern, check which sweeteners are used and read the carbohydrate, energy and allergen information as well.

Shoppers tracking carbohydrate

If you count carbohydrate in a snack, use the figure for the portion you intend to eat, not just the sugars figure. For people managing diabetes, Kent Community Health NHS Foundation Trust advises using food labels alongside individual advice from a dietitian.

What should you compare?

Start with sugars per 100g to compare packs on the same weight basis, then check the other label figures and your intended portion.

PriorityWhat to checkYour needs
Labelled sugars Compare sugars per 100g. McVitie’s lists 8.9g for The Light One; Tesco lists 14.6g for its plain Digestives and Sainsbury’s lists 16.3g for its plain Digestives. McVitie’s 30%-less-sugar claim compares The Light One with the average digestive, not each individual pack. The NHS describes 5g sugars or less per 100g as low sugars for solid food. I want less labelled sugar in a familiar afternoon biscuit, but I do not want to mistake a relative reduction for a low-sugars label.
Whole portion Read energy, saturates and carbohydrate alongside sugars, then use the pack’s portion weight for the amount you plan to eat. The Joybuy UK listing for Gullón Zero Sugar Free Original Digestives gives 68g carbohydrate and 430kcal per 100g despite listing less than 0.5g sugars per 100g. One biscuit may not weigh the same across packs. I want the figures for my actual snack, particularly if I count carbohydrate.
Ingredients Check the current pack’s sweeteners, allergen declaration and any consumption warning. The Joybuy UK listing for Gullón Zero Sugar Free Original Digestives names isomalt and maltitol, declares wheat, notes possible milk and soya, and warns that excessive consumption may produce a laxative effect. If I choose a sugar-free biscuit, I want to know what replaces the sugar and whether its ingredients suit me.

What is easy to misread?

  • Taking “reduced sugar” to mean “low sugar”

    McVitie’s says The Light One has 30% less sugar than the average digestive, while listing 8.9g sugars and 464kcal per 100g. The NHS low-sugars guide for solid food is 5g or less per 100g; the relative sugar claim does not describe the biscuit’s energy content.

    Compare sugars and energy per 100g, then use the pack’s portion information for the amount you expect to eat.

  • Taking “sugar-free” to mean suitable for every diet

    The Joybuy UK listing for Gullón Zero Sugar Free Original Digestives gives 68g carbohydrate per 100g, names isomalt and maltitol, declares wheat and warns about excessive consumption.

    Read the current pack for carbohydrate, sweeteners, allergens and the consumption warning before choosing a portion.

Relevant brand and product references

These figures describe the named biscuits, not every product made by each brand.

McVitie’s

The Light One is a reduced-sugar wheatmeal digestive.

  • McVitie’s lists 8.9g sugars and 464kcal per 100g and claims 30% less sugar than the average digestive.
  • It is not sugar-free. McVitie’s gives 68kcal per biscuit while Tesco gives 70kcal for its listing of The Light One; check the pack when calculating a portion.

Gullón

Zero Sugar Free Original Digestives offer a sugar-free option made with sweeteners.

  • The Joybuy UK listing gives less than 0.5g sugars per 100g.
  • The same listing gives 68g carbohydrate and 430kcal per 100g, names isomalt and maltitol, and warns that excessive consumption may produce a laxative effect.

Tesco

Tesco Digestives 400g are a plain own-label biscuit for comparison.

  • Tesco lists 14.6g sugars, 482kcal and 8.4g saturates per 100g for this product.
  • This biscuit is not described as reduced-sugar.

Sainsbury’s

Sainsbury’s Digestives 400g provide another plain-biscuit label to compare.

  • Sainsbury’s lists 16.3g sugars and 8.9g saturates per 100g for this product.
  • The product page notes that ingredients and nutrition can change, so check the pack if a figure matters to your choice.

M&S

M&S Digestive Biscuits are a plain option made with demerara sugar.

  • Marks & Spencer lists 18.2g sugars, 488kcal and 10.3g saturates per 100g for its 400g product.
  • Those figures apply to this biscuit, not to all M&S biscuits; it is not presented here as a reduced-sugar option.

Joybuy product options

This sugar-free digestive is an option for shoppers comparing labelled sugars for an afternoon snack; its carbohydrate, sweeteners and allergen information also matter to the choice.

Gullón Zero Sugar Free Original Digestives 400g pack

Gullón Zero Sugar Free Original Digestives 400g

For an afternoon snack where labelled sugars are the main consideration, the Joybuy UK listing gives less than 0.5g sugars per 100g. It also gives 68g carbohydrate and 430kcal per 100g, names the sweeteners isomalt and maltitol, declares wheat and notes possible milk and soya. The listing warns that excessive consumption may produce a laxative effect; check the current pack before choosing a portion.

View on Joybuy

Common questions

Does “30% less sugar” mean a digestive is low in sugar?

No. McVitie’s compares The Light One with the average digestive and lists 8.9g sugars per 100g. The NHS low-sugars guide for solid food is 5g or less per 100g.

Does sugar-free mean carbohydrate-free or lower in energy?

No: sugar-free does not, by itself, establish either point. The Joybuy UK listing for Gullón Zero Sugar Free Original Digestives gives less than 0.5g sugars, 68g carbohydrate and 430kcal per 100g. Compare all three figures on the packs you are considering and account for your portion.

How should I store an opened pack of The Light One?

Tesco’s listing for McVitie’s The Light One says to keep it in a cool, dry place and, once opened, in an airtight container. Follow the instructions on the pack you buy.

What should I check for allergies or when counting carbohydrate?

Check the current pack’s ingredients and allergen declaration: wheat appears in the cited McVitie’s reduced-sugar product and Gullón sugar-free listing. If you manage diabetes, work out the carbohydrate in your intended portion from the food label and follow your individual advice; Kent Community Health NHS Foundation Trust recommends using food labelling alongside advice from your dietitian.