Sugar-Free Biscuits & Cookies UK: Definitive Buyer's Guide

You are in the biscuit aisle. The golden digestives, the chocolate hobnobs, the shortbread – all of it looking very appealing. But you are watching your sugar. You have diabetes, you are on a low-carb plan, or you simply want to snack more carefully without giving up something you genuinely enjoy.

The good news is that in 2026, the choice is genuinely good. The UK market for sugar free biscuits has expanded significantly, with dedicated brands producing products that hold up against their sugary equivalents in both taste and texture. Gone are the days of chalky, oddly-flavoured alternatives that felt like a punishment.

This guide covers the full picture: what the labelling terms actually mean under UK law, which sweeteners to look for and which to avoid, a product-by-product brand comparison using verified nutritional data, where to buy across supermarkets and online, and specific guidance for diabetics, keto dieters, and weight-conscious shoppers.

What Does "Sugar Free" Actually Mean in the UK?

This is one of the most important questions any buyer can ask, and it is the one almost every other guide ignores. The terms printed on packaging are legal claims governed by specific rules under UK food law (Regulation (EU) No 1169/2011, retained in domestic law post-Brexit). They are not interchangeable.

Source: UK Food Information Regulations; Regulation (EU) No 1169/2011 as retained in UK law. SF and NAS designations in Diablo products confirmed against COA data.

Why does this distinction matter for diabetics? If you assume "no added sugar" means zero blood glucose impact, you could be caught out by naturally occurring sugars in ingredients. Always read the full nutrition panel, focusing on the "of which sugars" row and, critically, the total carbohydrate content. The sugar row alone does not tell the full story.

The Sweetener Guide: What Is Inside Your Sugar-Free Biscuit?

The taste, texture, and health impact of a sugar-free biscuit depends almost entirely on which sweetener was used. This is where most buying guides fall short. Here is a complete breakdown of every sweetener you are likely to encounter in UK products.

Sources: Mayo Clinic; Diet Doctor Sweetener Guide; GoodRx Health; PMC research; SACN 2025 review on low and no-calorie sweeteners. GI values are reference figures and may vary by product.

A Critical Note on Maltitol

Maltitol is the primary sweetener in the Diablo Sugar Free cookie and biscuit range, as confirmed by COA data. It is used because it behaves very like sugar in baking, delivering the texture and browning that other sweeteners cannot replicate as easily. However, it has a glycaemic index of approximately 35, which means it does raise blood glucose – significantly less than sucrose, but not negligibly. If you are tightly managing blood glucose, particularly if you are insulin-dependent, keep portion sizes to two to three biscuits per sitting.

What the SACN 2025 Review Found

The Scientific Advisory Committee on Nutrition's 2025 review on low and no-calorie sweeteners concluded that LNCS consumption does not increase blood glucose levels, and a meta-analysis of 29 randomised controlled trials found no increase in blood glucose following LNCS intake. This applies to stevia, erythritol, isomalt, and similar compounds. Maltitol, as a sugar alcohol with a moderate GI of approximately 35, warrants more caution and should not be treated as equivalent to zero-impact sweeteners.

Best Sugar-Free Biscuits in the UK: Brand-by-Brand Breakdown

Based on taste, verified nutritional data, UK availability, and value for money, here are the top products for UK shoppers in 2026.

Diablo Sugar Free – The UK Market Leader

Diablo Sugar Free was established in 2010 and has grown into the most recognised dedicated sugar-free confectionery brand in the UK, selling across more than 100 countries with a range of over 100 products. Their cookie and biscuit range is their most popular category, and all nutritional data below is sourced from verified COA documents.

All product names, SKUs, net weights, carbohydrate and sugar figures sourced from verified Diablo COA documents. SF = Sugar Free (max 0.5g sugar/100g). NAS = No Added Sugar (naturally occurring sugars from ingredients may be present). Prices approximate, April 2026.

Sugar Free Chocolate Chip Cookies (130g)

SF | <0.5g sugar/100g | 39g carbs/100g

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Sugar Free Coconut Cookies (150g)

SF | <0.5g sugar/100g | 35g carbs/100g

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Sugar Free Chocolate Striped Peanut Cookies (150g)

SF | <0.5g sugar/100g | 39g carbs/100g

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No Added Sugar Digestive Cookies (150g)

NAS | 1g sugar/100g | 5g fibre/100g

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SF Extra Dark Cocoa Cookie with Vanilla Cream (176g)

SF | <0.5g sugar/100g | Sandwich format

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SF Vanilla Cookie with Cocoa Cream (176g)

SF | <0.5g sugar/100g | Sandwich format

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NAS Chocolate Cream Flavoured Wafer (150g)

NAS | 1.5g sugar/100g | Crispy wafer thins

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NAS Cream Filled Milk Chocolate Wafers (150g)

NAS | 5.2g sugar/100g | Chocolate coated

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A practical note on Diablo cookies: because maltitol is the primary sweetener, these products deliver a very convincing taste and texture. The trade-off is that at higher consumption, maltitol has a GI of approximately 35 and can cause digestive discomfort. A serving of two to three biscuits is the right approach.

Gullon – The Supermarket Shelf Specialist

Gullon is a Spanish biscuit manufacturer with decades of heritage and a formidable sugar-free range. Their UK presence is strongest in Tesco, Morrisons, and B&M, making them the most accessible brand for shoppers who prefer buying in-store rather than online. Gullon nutritional data below is sourced from publicly available product information; it is not covered by Diablo COA documents.

A specific note on the Gullon digestives: this product consistently appears on UK diabetes community forums as the go-to recommendation. The use of isomalt alongside maltitol gives a more favourable overall glycaemic profile than pure-maltitol products. They are also vegan, which broadens their appeal considerably.

Farmhouse – The Multipack Specialist

Farmhouse produces a well-regarded Sugar Free Biscuits for Diabetics Multipack Selection Box, offering four distinct varieties in one pack: Viennese Shorties, Ginger Cookies, Chocolate Chip Cookies, and Oat Crunch Cookies. Available primarily via Amazon and specialist diabetic food retailers. This multipack is consistently popular as a gift option, appearing frequently in "diabetic gift" search results and on comparison sites.

Siro – The Sainsbury's Find

Siro sugar-free chocolate chip cookies are less well known but have received consistently strong reviews from UK testers, with particular praise for texture and genuine chocolate flavour. Availability is limited primarily to Sainsbury's, which is worth flagging for those who shop there regularly.

Full Product Comparison Table

Diablo product data sourced from verified COA documents. Gullon and Farmhouse figures sourced from publicly available product information. SF = Sugar Free (max 0.5g sugar/100g under UK food law). NAS = No Added Sugar. Despite low sugar figures, these products are not zero-carbohydrate due to wheat flour content. For net carbs on a keto plan, subtract polyol grams from total carbs.

Where to Buy Sugar-Free Biscuits in the UK

One of the most consistent frustrations UK shoppers report is that sugar-free biscuits are not always easy to find in the standard biscuit aisle. Knowing where to look saves a great deal of time.

Supermarkets

Online Retailers

• diablosugarfree.com – the official Diablo store; widest range, multipack deals, and wholesale trade pricing for B2B buyers
• Amazon UK – Gullon variety packs, Farmhouse multipacks, Diablo; best for bulk buying and convenient delivery
• hollandandbarrett.com – the Diablo range plus H&B own products; Click and Collect available from most stores
• sweetswithout.co.uk – specialist sugar-free confectionery retailer with a good range of niche and imported products
• buysnacksuk.com – strong Gullon focus with bundle deals available
• zamprimestore.com – carries both Gullon and Diablo with a good variety selection

Trade and Wholesale Buyers

For supermarkets, health food stores, gym nutrition retail, and online grocery platforms sourcing at wholesale, Diablo Sugar Free (diablosugarfree.com) offers dedicated trade pricing and multipack configurations. Gullon products are distributed through major UK food wholesalers. The Farmhouse range is accessible via Amazon Business accounts. International distributors can contact Diablo directly via the trade section of their website.

Sugar-Free Biscuits for Specific Dietary Needs

For Diabetics – Type 1 and Type 2

Sugar-free biscuits can be part of a diabetic diet when chosen carefully. The SACN 2025 review confirms that low and no-calorie sweeteners do not raise blood glucose levels, which applies to stevia, isomalt, and erythritol. Maltitol, the primary sweetener in the Diablo cookie range (confirmed by COA data), has a GI of approximately 35 and does have a moderate blood glucose effect in quantity.

• Choose products using isomalt where possible (such as Gullon digestives) for lower GI impact; isomalt has a GI of approximately 2
• Monitor total carbohydrates, not just the sugar row – carbohydrates from wheat flour contribute to blood glucose regardless of sweetener type
• Pair with protein (a handful of nuts or a small portion of cheese) to slow glucose absorption
• Start with two to three biscuits as a serving and check your individual blood glucose response 90 to 120 minutes after eating
• Avoid eating on an empty stomach; as a post-meal treat following protein and vegetables, the blood glucose impact is significantly lower
• Always consult your diabetes care team for personalised guidance, particularly if you are insulin-dependent

For Keto and Low-Carb Dieters

Standard sugar-free biscuits are lower in sugar than regular varieties but are still significant in total carbohydrates due to wheat flour. Per COA data: Diablo SF Chocolate Chip Cookies contain 39g carbs per 100g; Diablo SF Coconut Cookies contain 35g carbs per 100g. The sandwich cookie products (SND range) sit at 66g carbs per 100g due to their flour-heavy format. For a strict keto plan targeting under 20g net carbs per day, these are not suitable for regular consumption. For a flexible low-carb approach, two to three Diablo cookies can fit – calculate net carbs as total carbohydrates minus polyols.

For Weight Management

Sugar-free biscuits are typically 15 to 25 percent lower in calories than standard equivalents, due to the lower caloric density of sugar alcohols compared to sucrose. Per COA data, the Diablo SF Chocolate Chip Cookies carry 462 kcal per 100g and the Diablo SF Coconut Cookies 463 kcal per 100g – these are calorically dense products. A serving of two to three biscuits as part of a calorie-conscious diet is a reasonable approach; they are not calorie-free foods.

For Children

Parents looking to reduce their children's sugar intake find sugar-free biscuits a popular consideration. Most Diablo and Gullon products are suitable for children. Children's digestive systems can be more sensitive to polyols, so start with smaller portions. Check allergen labelling carefully: COA data confirms that Diablo cookie products contain wheat (gluten) and most contain eggs; some contain soya.

For Vegans

The Gullon sugar-free range is predominantly vegan, including the widely available digestives, Maria Tea Biscuits, and Fibre Biscuits. Diablo cookies contain eggs per COA data and are not suitable for vegans. Always verify current product labels, as recipes can be updated.

How to Read a Sugar-Free Biscuit Label

Becoming a confident label-reader is the most practical skill you can develop. Here is exactly what to look for, and what to watch out for.

What to Look For

• SF or NAS declaration: Sugar Free (SF) means max 0.5g sugar per 100g; No Added Sugar (NAS) means no sugar was added but natural sugars from ingredients may be present – these are not the same claim
• Sweetener(s) listed clearly: usually shown as "sweetener: [name]" in the ingredients list; isomalt and erythritol are the most favourable for diabetics; maltitol is the most common in mainstream products
• Total carbohydrates per serving: calculate your actual portion rather than relying on the per-100g figure alone – a 130g pack is roughly 6 servings at 21.5g each for the Diablo Chocolate Chip Cookies
• Fibre content: more fibre slows glucose absorption; the Diablo NAS Digestive Cookies contain 5g fibre per 100g per COA data
• A clear sugar free or no added sugar claim on the front of pack, understood correctly as described above

What to Watch Out For

• Maltitol high on the ingredients list: the higher up an ingredient appears, the greater the quantity; all Diablo cookies list maltitol as their sweetener, which is transparent and consistent – but it means the GI is approximately 35, not zero
• Confusing SF with NAS: all Diablo wafer products are NAS, not SF; their sugar content reflects naturally occurring sugars from ingredients, which matters for tight blood glucose management
• Misleadingly small serving sizes: always calculate for your actual intended portion rather than the stated serving size, which is often smaller than real-world consumption
• Multiple sugar aliases: corn syrup, glucose syrup, dextrose, fructose, and fruit concentrate are all forms of rapidly absorbed sugar; any of these appearing in a "sugar free" product is a red flag
• Absence of an allergen declaration: most sugar-free biscuits contain wheat (gluten) and many contain eggs and soya; always check if you or your household have relevant allergies

The Sugar-Free Biscuit Buyer's Framework: Four Steps

1. Choose the right sweetener. For the lowest blood glucose impact, look for isomalt or erythritol-sweetened products. For mainstream availability and best taste, maltitol-sweetened products (Diablo, Gullon) are the practical choice – keep portions to two to three biscuits per sitting to stay comfortably below the laxative-effect threshold.
2. Distinguish SF from NAS before you buy. Sugar Free means max 0.5g sugar per 100g. No Added Sugar means naturally occurring sugars may be present. Diablo cookies and sandwich cookies carry the SF claim; Diablo wafers and digestive cookies carry NAS. Know which you are buying.
3. Time it strategically. Eating your biscuit as a post-meal treat, after a meal containing protein, fat, and fibre, significantly blunts any blood glucose response. Avoid eating on an empty stomach where possible.
4. Monitor your personal response. Blood glucose reactions to specific foods vary meaningfully between individuals. A finger-prick test or CGM reading 90 to 120 minutes after eating gives you personal data that is far more actionable than any general guideline.

The UK Sugar-Free Biscuit Market in 2026

The UK biscuit market is large and growing. The total sector was valued at approximately £3.3 billion in 2025 (IBIS World), with projections reaching £5.86 billion by 2030 (Grand View Research, CAGR 4.9%). Within this, the health-conscious and free-from segment is growing fastest, driven by rising consumer concern about sugar intake and by the expanding population of people managing diabetes and pre-diabetes in the UK.

A 2024 Food Standards Agency survey found that 57 percent of UK consumers expressed concern about sugar levels in their food, placing it as the fourth highest dietary concern nationally. This is translating directly into shelf space: Gullon's sugar-free digestives are a consistent top seller on Amazon UK, and dedicated health food retailers report growing volumes across the Diablo range.

The current price premium for sugar-free biscuits sits at approximately 1.5 to 2 times the cost of standard equivalents (Accio market research, 2026), reflecting the specialist ingredients required. As production scales and more brands enter the category, this premium is expected to narrow through the late 2020s.

HFSS (High Fat, Sugar and Salt) advertising restrictions, which extended to paid digital platforms in October 2025, are creating an additional commercial incentive for manufacturers to develop genuinely lower-sugar formulations. For consumers, this means the quality and variety of sugar-free options is likely to continue improving.

Frequently Asked Questions