10 Best Low Carb Cereal Bars in The UK

Last updated on 16/07/2025

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FULFIL Vitamin and Protein Bars (15 x 55 g Bars) — White Chocolate Peanut and Caramel Flavour — 20 g High Protein, 9 Vitamins, Low Sugar

Why We Love It

Balanced nutrition meets delightful taste.
Enriched with essential vitamins.
Ideal for everyday adventures.

Main Highlights

HIGH PROTEIN and LOW SUGAR BARS: Each 55g bar contains 20g of protein, less than 3 grams of sugar and only 211 calories. Great for a tasty treat or a post workout refuel
9 VITAMINS: Each FULFIL bar contains 30 percent RDA for 9 essential vitamins to support you through everyday life
DELICIOUS and NUTRITIOUS: FULFIL bars are not your average protein bar. A bright twist on a FULFIL favourite White chocolate encases a layer of caramel mixed with crunchy crispies surrounding a rich peanut centre
OUR PACKS CONTAIN 15 BARS: So you never run out of your favourite protein bar
LIFE'S WONDERFUEL: We want FULFIL bars to fuel you on all of your everyday adventures, whether it’s to get you through your work day, hiking up a mountain, a workout, or a sofa snack we’ve got you covered

ahead | Keto Chocolate Bars – 18 x 35g – Coconut Almond – Low Carb Sugar Free – 100% Natural with MCT-Fats – Keto Snacks & Healthy Snacks

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Why We Love It

Healthy and tasty snack.
Entirely natural ingredients.
Perfect for Keto diet.

Main Highlights

PERFECT SNACK: Provide your body with the combination of healthy fats and fibre in one bar. A low carb bar perfect for on the go. Feeds your body and brain with a keto snack - whether you're exercising, travelling or in the office.
100% NATURAL INGREDIENTS: Healthy snacks have never been so delicious. The Ahead Keto Bars are made exclusively from natural ingredients such as coconut flakes, almonds and cocoa butter.
KETO ENERGY BAR: The perfect energy bar with 35% healthy fats from C8 MCT, coconut flakes and cocoa nibs provide you with sustainable mental energy.
KETO FRIENDLY: Healthy fats instead of sugar, because the chocolate bar is free from industrial sugar and is suitable for a keto diet with only 5g net carbs and 1.7g sugar*.
RIDICULOUSLY TASTY: Not another low carb protein bars that claims to be a sweet without sugar but also tastes like one. Crunchy cocoa nibs, coconut flakes and sugar-free chocolate - the Bar combines functional food and taste.
LOW CARB SNACK: All of the enjoyment, none of the compromise with our low sugar chocolate. With the natural sweetness from cocoa and coconut our recipe ensures real enjoyment. So you can snack on our keto bar without a guilty conscience.

GOOD GOOD Krunchy Keto Bar Salty Caramel - Low Calorie, Low carb & No Added Sugar - High Fibre Protein Bar - Suitable for Diabetics & Sugar Intolerant Individuals (60x35g)

Why We Love It

Low calorie, high protein.
Keto-friendly, 2g net carbs.
No added sugar.

Main Highlights

LOW CALORIE & HIGH PROTEIN - Each bar is only 150 calories yet provides an incredible 4g of healthy fat and 3g of protein. The GOOD GOOD Krunchy Keto bars are a tasty and delicious snack that satisfy your sugar cravings without any of the junk.
KETO FRIENDLY SNACK - With only 2g of net carbs per serving, these tasty treats are great for anyone following a keto diet or lifestyle. Simply pop one in your lunch box or gym bag and enjoy a little pick me up whenever you need.
NO ADDED SUGAR - Here at GOOD GOOD we believe that life should be sweet but without any added sugar which is why you won't find any added sugar in our Krunchy Keto bars. We also don't use any artificial sweeteners which is why our products taste so good! Suitable for diabetics and those who are intolerant to sugar.
GREAT FOR ON THE GO - These convenient, 35g bars are great for taking with you as a snack at school or work. They're also great as a post-work out pick me up so make sure to take one with you to your next workout session!
COMES FROM THE LEADING NAME - GOOD GOOD is an Icelandic low carb and keto-friendly brand, a trusted name in UK and USA, offering wide selection of products ranging from spreads, syrups and natural sweeteners including stevia and erythritol.

Grenade High Protein, Low Sugar Bar - Caramel Chaos, 12 x 60 g (Packaging May Vary)

19% Off

Why We Love It

Packed with 21g protein.
Sugar content only 1.5g.
Certified by Informed Sport Programme.

Main Highlights

HIGH PROTEIN: Packed with protein, with 21 g per bar
LOW SUGAR: Low in sugar, with just 1.5 g per bar
GUILT FREE TREAT: Each triple-layered bar consists of protein nougat, topped with caramel and coated in milk chocolate and crispies
INDULGENT ON THE GO SNACK: This indulgent low sugar snack is perfect for enjoying at any time of the day as a delicious snack or a post workout treat
INFORMED SPORT CERTIFIED: Certified with the Informed Sport Programme and therefore suitable for use by drug tested athletes and military personnel
INGREDIENT CHANGE: Packaging and ingredients may vary

Fit bakes 64 Calories Belgian Chocolate Mini Bars (12x19g) Diabetic Chocolate Keto Snack, 1 Net Carb Low Sugar Crunch Cake, Diabetic Sweets Biscuits, Low Calorie Snack, No Added Sugar, Fitbakes

17% OffFree Shipping

Why We Love It

Low sugar, low calorie snack.
Perfect for Keto, Atkins diet.
Award-winning, gut-healthy treat.

Main Highlights

Low Sugar Healthy Snacks : Each of our mini skinny crunch bars has just 64 calories. Low sugar snacks, less than 1g sugar per bar. Small but mighty, tasty, crunchy, mini skinny low calorie bars wrapped in low sugar chocolate.
Keto Bars & Atkins Bars : Keto diet, & Atkins diet friendly. Our low sugar bars are the perfect for the Atkins diet. Guilt free keto chocolate low carb snacks : Keto food with less than 1 net carb.
Diabetic Chocolates : Ideal diabetic gift, our diabetes chocolates are great for a diabetic hamper. Try a new diabetic food with our crispy choc diabetic snacks, perfect diabetic biscuits & treats.
Weight Watchers Snacks : WW Wellness Wins Program official partner. Fibre snacks for gut health : 5g fibre per bar. No artificial ingredients.
Award Winning Healthy Snacks : Nourish Awards 2021 Winners. Try all our tasty flavours : Salted Caramel, Hazelnut, Dark Chocolate Orange, Cookies and Cream.

Fitnesshock Protein Bar 12-Pack no added sugar, low carb (3.5g), rich in fibre, low calories, 12pcs Fitness chocolate protein bar, no flour and palm oil, 12x50g coconut flavor

4% OffFree Shipping

Why We Love It

Minimal impact on blood sugar.
Healthy, low-calorie chocolate treat.
Rich in filling fiber.

Main Highlights

VERY LOW CARB - only 3.5g per bar and almost Sugar-Free (1g) - has minimal impact on blood sugar levels
ONLY 1G OF SUGAR - A treat without extra calories and harm to your figure. A much more conscious alternative to a conventional chocolate bar
RICH IN FIBER 19.5g - 65% of the daily requirement - very filling, can serve as a meal replacement
Сhocolate protein bar with exotic flavor and real coconut flakes. The omission of refined sugar and flour makes the bars a healthy snack
PALM OIL-FREE, almost no saturated fat, gluten-free, non-GMO. No artificial flavors or preservatives

Surreal Variety Pack - High Protein Cereal – Zero Sugar- Healthy Plant Based Cereal - High in Fibre - Low Carb – Gluten Free - Vegan - 13g of Protein, 0g of Sugar - 240g per Box - 4 Pack (1 x each)

8% OffFree Shipping

Why We Love It

Healthy cereal, zero sugary junk.
Packed with plant-based protein.
Vegan friendly, gluten-free.

Main Highlights

SURREALLY HEALTHY CEREAL - Love cereal, hate sugary junk? You need SURREAL’s high protein cereal. Our Variety pack comes with our bestselling Cocoa, Frosted, Cinnamon and Peanut Butter flavours.
PACKED WITH PROTEIN - Each bowl of SURREAL is packed with at least 13g of plant-based protein. It’s a tasty and filling breakfast, or a perfect post-workout snack.
ZERO SUGAR - Old school cereal is sugar-spike central, but not SURREAL. There’s 0g sugar in every bowl - and yet it’s still packed with flavour.
SUPER TASTY - Think “healthy” cereal has to taste like cardboard? Think again. SURREAL tastes just like your favourite childhood cereals.
VEGAN FRIENDLY, GLUTEN FREE - No wheat? No whey. All our recipes are 100% plant-based and completely gluten free. Plus, it’s all low carb and keto friendly, so it’s great for all sorts of different diets.

Misfits Vegan Protein Bars, Caramel Fudge - Updated Recipe | Low Sugar & Carb, High Fibre Snacks | Pack of 15

30% OffFree Shipping

Why We Love It

Indulgent, satisfying and health-friendly.
Vegan and protein-packed.
Low sugar, smart indulgence.

Main Highlights

HEALTHIER CHOCOLATE SNACK: A chewy & fudgy sweet caramel fudge flavoured centre, topped with a layer of indulgent caramel & coated with smooth vegan chocolate & high protein crispy pieces, for a satisfying crunch; ideal on-the-go or office snacks
UPDATED SOFTER RECIPE: These bars are made with our updated recipe, for a more soft, gooey & indulgent experience; you get a 10% bigger bar too
15 G PROTEIN PER BAR: Our plant-based bars pack 15 g of vegan protein per bar; we use a blend of pea & soy protein for a deliciously soft texture & taste
LOW SUGAR BARS: These vegan snacks are high in fibre, yet low in sugar, with less than 1 g of sugar per bar; a low carb bar with just 190 calories, for post-gym fuel or breakfast without the sugar crash
GUILT-FREE INDULGENCE: Our satisfying, triple-layered treats are an ideal chocolate snack with all the nutritional benefits of a protein bar & zero compromise on taste; great for chocolate lovers who want to cut back on dairy & sugar

Fulfil Vitamin and Protein Bars (15 x 40g Bars) — Chocolate Hazelnut Whip Flavour — 14g High Protein, 9 Vitamins, Low Sugar

Why We Love It

High protein, low sugar delights.
Delicious, nutritious, chocolate hazelnut bars.
Stay stocked with 15-pack.

Main Highlights

HIGH PROTEIN and LOW SUGAR BARS: Each 40g bar contains 14g of protein, 1.1 grams of sugar and only 149 kcal per serving. Great for a tasty treat or a post workout refuel
DELICIOUS AND NUTRITIOUS: FULFIL bars are not your average protein bar. Our Chocolate Hazelnut Whip Flavour contains an indulgent hazelnut centre covered in creamy milk chocolate and topped with crunchy hazelnut pieces. A ideal snack for chocolate lovers but with added benefits
OUR PACKS CONTAIN 15 BARS: So you never run out of your favourite protein bar
LIFE'S WONDERFUEL: We want FULFIL bars to fuel you on all of your everyday adventures, whether it’s to get you through your work day, hiking up a mountain, a workout, or a sofa snack we’ve got you covered
9 VITAMINS: Each FULFIL bar contains 30 percent RDA for 9 essential vitamins to support you through everyday life

GOOD GOOD Krunchy Keto Bar Coconut - Low Carb & High Protein Bar - No Added Sugar Snack Bar - High Fibre - Suitable for Diabetics & Sugar Intolerant Individuals (15x35g)

Why We Love It

Low calorie and high protein.
Keto friendly and delicious.
No added sugar goodness.

Main Highlights

LOW CALORIE & HIGH PROTEIN - Each bar is only 150 calories yet provides an incredible 4g of healthy fat and 3g of protein. The GOOD GOOD Krunchy Keto bars are a tasty and delicious snack that satisfy your sugar cravings without any of the junk.
KETO FRIENDLY SNACK - With only 2g of net carbs per serving, these tasty treats are great for anyone following a keto diet or lifestyle. Simply pop one in your lunch box or gym bag and enjoy a little pick me up whenever you need.
NO ADDED SUGAR - Here at GOOD GOOD we believe that life should be sweet but without any added sugar which is why you won't find any added sugar in our Krunchy Keto bars. We also don't use any artificial sweeteners which is why our products taste so good! Suitable for diabetics and those who are intolerant to sugar.
GREAT FOR ON THE GO - These convenient, 35g bars are great for taking with you as a snack at school or work. They're also great as a post-work out pick me up so make sure to take one with you to your next workout session!
COMES FROM THE LEADING NAME - GOOD GOOD is an Icelandic low carb and keto-friendly brand, a trusted name in UK and USA, offering wide selection of products ranging from spreads, syrups and natural sweeteners including stevia and erythritol.

8.7

Excellent

We scanned 911 products

We reviewed these offers relevant to the Low Carb Cereal Bars within online retailers such as Amazon, eBay and other local retailers, ensuring we covered all major brands and models. The products we selected come from trusted brands like Fulfil, ahead, GOOD GOOD, Grenade, fit bakes, FitnesSHOCK, Surreal, Misfits, all of which have a reputation for consistently delivering high-quality products that users love and innovative approaches for function & design.

For the best Low Carb Cereal Bars in the market, we considered we took a deep dive into 4556 online reviews , focusing on elements like user satisfaction, performance in real-world conditions, and long-term reliability. Our ranking also evaluates each review’s relevancy, authenticity, up-to-dateness and depth so that the comparison is more sound.

We concluded that:

The clear winner of our analysis is FULFIL Vitamin and Protein Bars (15 x 55 g Bars) — White Chocolate Peanut and Caramel Flavour — 20 g High Protein, 9 Vitamins, Low Sugar. We love many things about this product by Fulfil. What sets it apart from the competition is Balanced nutrition meets delightful taste, Enriched with essential vitamins, Ideal for everyday adventures.
The best value product for most shoppers and where user satisfaction is continuously the highest is ahead | Keto Chocolate Bars – 18 x 35g – Coconut Almond – Low Carb Sugar Free – 100% Natural with MCT-Fats – Keto Snacks & Healthy Snacks by ahead based on online reviews by bloggers, experts and online shoppers.
The biggest bargain at the moment for Low Carb Cereal Bars and the best cost-to-value ratio is Misfits Vegan Protein Bars, Caramel Fudge - Updated Recipe | Low Sugar & Carb, High Fibre Snacks | Pack of 15at Misfits with a 30% discount.
Our list of the best Low Carb Cereal Bars is updated regularly to reflect new releases and changes in product availability, so be sure to check back often for the latest rankings and discounts.

10 Best Low Carb Cereal Bars in The UK

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We scanned 911 products

We concluded that: