10 Best Low Carb Protein Bars in The UK

Last updated on 13/09/2025

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9.8

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Grenade

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

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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

Premier Protein - High Protein Bar 50% - Multiflavourbox - 20x40g - Low Sugar - Low Carb - High Protein Bar

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Why We Love It

High protein content: 50%.
Amazing taste and texture.
Without palm oil.

Main Highlights

DELICIOUS PROTEIN BARS WITH CRUNCH & CHOCOLATE: Smooth chocolate coating meets an extra crunchy layer. Perfect as a snack in between – whether for sports, work or leisure
TOP NUTRITION – 20G PROTEIN PER BAR: Each 40 g bar provides 20 g of high-quality protein (50% protein content) with max. 0.8 g sugar. Make every day your day with plenty of exercise and a balanced, healthy diet
FEWER CARBS – MORE INDULGENCE: Compared to conventional chocolate bars, these bars contain around 30% fewer carbohydrates
PALM OIL FREE – MINDFUL SNACKING: Free from palm oil yet full of flavour. For everyone who cares about sustainability and quality
VARIETY IN A PRACTICAL 20-PACK MIX BOX: Discover several delicious flavours in one multi-flavour box with 20 protein bars. Ideal for trying, sharing or as a versatile stock for every day

Fitnesshock Protein Bars No Sugar Added, Low Carb, High Fiber Snacks – 3 Delicious Chocolate Flavors | Variety Flavour Box | 12x50g

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Why We Love It

Delightful variety pack flavors.
Exceptionally low sugar content.
Rich in fiber, protein.

Main Highlights

FitnesSHOCK variety pack offers you 12 bars in 3 EXQUISITE FLAVORS: Coconut, Hazelnut-Caramel and Peanut-Salted Caramel. You will surely find your favorite taste!
ONLY 1G OF SUGAR - A treat without extra calories and harm to your figure. A much more conscious alternative to a conventional chocolate bar
LOW CARB <5g per bar - perfect nutritional balance: delicious aid for carbohydrate control
RICH IN FIBER and PROTEIN - makes you feel full quickly - A practical and healthy snack
PALM OIL-FREE, almost no saturated fat, gluten-free, non-GMO. No artificial flavors or preservatives

Warrior Crunch - High Protein Bars - 20g Protein Each Bar - Low Carb, Low Sugar Snack - 12 Pack x 64g (Variety Pack)

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Why We Love It

High protein for muscle recovery.
Ideal for Keto diet followers.
Maintains energy levels longer.

Main Highlights

20 GRAMS OF PROTEIN PER BAR – Each bar delivers a powerhouse of protein, more than three whole eggs Ideal for supporting muscle recovery and growth after intense workouts or sports activities
LOW CARB, KETO-FRIENDLY – With under 3g of net carbs per bar, these are an ideal choice for those following a Keto diet or managing carb intake for weight control
LOW SUGAR, SUSTAINED ENERGY – Each bar contains less than 3g of sugar, helping to stabilise blood sugar levels and provide lasting energy throughout the day
CHEWY CRISPY SNACK BAR – Enjoy the Ideal blend of crispy, crunchy pieces and a triple-layer chocolate coating for a satisfying high-protein snack that tastes indulgent
PACK OF 12 PROTEIN BARS – Includes 12 individually wrapped bars, making it easy to enjoy a protein boost after workouts or as part of your daily nutrition plan

NICKS Protein Bar Mix Box, Keto Snack Bars 4g Net Carbs, 15g Protein, 5g Collagen No Added Sugar Gluten Free Low Carb Snacks (9x50g)

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Why We Love It

Flavors indulge every sweet tooth.
Great protein source, low carbs.
Gluten-free, stabilizes blood sugar.

Main Highlights

DELICIOUS Keto milk chocolate protein bar in 4 different flavor variations, in total 9 bars in each variety box
30% HIGH QUALITY COMPLETE PROTEIN from whey and milk plus additional collagen peptides
LOW IMPACT CARBS with less then 4g Net carbs and 190-214 calories per bar
GLUTEN FREE & WITHOUT PALM OIL as wheat and gluten spikes your blood sugar levels
KETO PROTEIN SNACK and treat which can help you overwin your sugar cravings in a more healthy and guilt-free indulgence

Snickers - High Protein Bars | Low Sugar, Only 2g of Sugar per bar, Hazelnut and Milk Chocolate Flavour, 12 x 57g Box, 20g Protein

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Why We Love It

Iconic taste with protein boost.
Indulgent layers in each bar.
Perfect for on-the-go.

Main Highlights

Protein power: Craving Snickers? Now you can get the iconic taste you love with a protein boost! Our Snickers hazelnut and milk chocolate low sugar protein bars deliver 20g of protein, with only 2g sugar per bar.
Layers of indulgence: Each bar is packed with delicious hazelnut, crunchy peanuts, chewy caramel and coated in smooth milk chocolate.
Fuel your day: With only 221 calories per bar, they're perfect for a protein-powered energy snack between meals, a post-workout pick-me-up, or anytime you need an epic treat boost.
Conveniently sized: One box contains 12 bars, individually wrapped for on-the-go enjoyment. Now that’s satisfying!
Good to know: Not suitable for vegetarians. Product contains milk, soya, hazelnut and peanuts. May contain other nuts, egg and gluten.

IQBAR Peanut Butter Chip Keto Protein Bars, 12-Count, Gluten Free, Low Carb, Vegan Snacks

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Why We Love It

Supports brain and body health.
Perfect for diet-friendly snacking.
Convenient on-the-go meal replacement.

Main Highlights

No. 1 Keto-Friendly Snack Bars for Brain & Body - IQBAR low carb bars are made using simple ingredients + 6 amazing brain nutrients. The keto snack bars are designed to keep you full, focused & energized throughout the day. Our gluten free protein bars also contain 12g plant-based protein, 1g sugar, 10g fiber & only 3g net carbs. These vegan keto bars are packed with nutrients & healthy fats to support your active & healthy lifestyle.
Diet-Friendly Protein Snacks - Our low calorie protein bars are diet-friendly. IQBAR high protein snacks are vegan, keto-friendly, dairy-free, soy-free, kosher & high in fiber. Our healthy snack bars are made using clean-label ingredients that are packed with compounds for both your brain and body. Moreover, our gluten free bars are developed with every diet restriction in mind.
6 Brain-Boosting Nutrients in Every Snack Bar - IQBAR clean vegan protein bars are packed with Lion’s Mane, MCTs, Omega 3, Flavonoids, Vitamin E & Choline. We use a science-backed formulation to provide you with healthy & tasty nutrition bars for your active & busy lifestyle.
Meal Replacement Bars You Can Enjoy On-the-Go - IQBAR plant based snacks are convenient meal replacement bars you can enjoy anytime, anywhere. Enjoy our low sugar protein bars right after an intense workout, in the middle of a hectic day at work, or while running errands. Our keto protein bars are definitely perfect for any time of the day.
Keto Friendly Snacks w/ Only 3g Net Carbs in Every Serving - Net carbs are carbs that are absorbed by the body, and our keto treats come with only 3g of net carbs in every serving. Each keto plant based protein bar is packed with 13g of total carbs, 10g of fiber, 12g of fats & 180 calories.

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

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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.

Mars - Salted Caramel Low Sugar Chocolate Hi Protein Bars | 12 x 57g Pack, Only 2g of Sugar per bar, High Protein Energy Snack, 18g Protein

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Why We Love It

Delicious Mars chocolate flavor.
Low sugar, high protein.
Perfect post workout snack.

Main Highlights

Introducing our new Mars Salted Caramel low sugar protein bar which combines the unmistakable delicious taste of Mars chocolate with a soft layer of salted caramel.
This sweet and salty addition to our low sugar range contains 18g of protein per bar and just 2g sugar.
Only 196 calories per bar - Not suitable for vegetarians.
Perfect to carry you between meals, or as a great post workout snack boost.
One box contains 12 individually wrapped bars.

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

Why We Love It

Low calorie, high protein bars.
Ideal for Keto-friendly lifestyles.
No sugar, perfect on-the-go.

Main Highlights

LOW CALORIE & HIGH PROTEIN BARS - 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.

8.8

Excellent

We scanned 1514 products

We reviewed these offers relevant to the Low Carb Protein 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 Grenade, Premier Protein, FitnesSHOCK, Warrior, N!CK'S, Snickers, IQBAR, fit bakes, Mars, GOOD GOOD, 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 Protein Bars in the market, we considered we took a deep dive into 7571 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 Grenade High Protein, Low Sugar Bar - Caramel Chaos, 12 x 60 g (Packaging May Vary). We love many things about this product by Grenade. What sets it apart from the competition is Packed with 21g protein. , Sugar content only 1.5g. , Certified by Informed Sport Programme.
The best value product for most shoppers and where user satisfaction is continuously the highest is Premier Protein - High Protein Bar 50% - Multiflavourbox - 20x40g - Low Sugar - Low Carb - High Protein Bar by Premier Protein based on online reviews by bloggers, experts and online shoppers.
The biggest bargain at the moment for Low Carb Protein Bars and the best cost-to-value ratio is Mars - Salted Caramel Low Sugar Chocolate Hi Protein Bars | 12 x 57g Pack, Only 2g of Sugar per bar, High Protein Energy Snack, 18g Proteinat Mars with a 22% discount.
Our list of the best Low Carb Protein 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 Protein Bars in The UK

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