10 Best High Protein Low Calorie Bars in The UK
Last updated on 08/09/2025
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Premier Protein - High Protein Bar 50% - Multiflavourbox - 20x40g - Low Sugar - Low Carb - High Protein Bar
Premier Protein
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Premier Protein
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
Value for Money
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Grenade High Protein, Low Sugar Bar - Caramel Chaos, 12 x 60 g (Packaging May Vary)
Grenade
19% Off
Grenade
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
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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
Mars
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Mars
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
22% OffFree Shipping
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.
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PhD Nutrition Smart Protein Bar Low Calorie, Nutritional Protein Bars/Protein Snacks, High Protein Low Sugar, Chocolate Brownie Flavour, 20g of Protein, 64g Bar (12 Pack)
PhD
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PhD
PhD Nutrition Smart Protein Bar Low Calorie, Nutritional Protein Bars/Protein Snacks, High Protein Low Sugar, Chocolate Brownie Flavour, 20g of Protein, 64g Bar (12 Pack)
4% OffFree Shipping
Why We Love It
- Convenient, tasty, high-protein snack.
- Guilt-free chocolate indulgence.
- Aids weight loss seamlessly.
Main Highlights
- HIGH-PROTEIN BAR: Delicious protein bars with a high protein content. Each 64g bar contains 21g of protein – nearly 30%. The perfect on-the-go protein snack, ideal for a boost during sports activities
- LOW-SUGAR INDULGENCE: Each bar contains 1.2 of sugar, making PhD Nutrition Smart Protein Bars suitable for a low-sugar diet or nutrition plan. Completely free from palm oil
- PERFECT TEXTURE: A super-soft protein core coated in delicious caramel and protein crispies creates a crunchy yet tender treat for any occasion. A high-protein bar packed with full flavor despite low sugar content
- SUITABLE FOR MACRO-FRIENDLY NUTRITION: These protein bars are ideal for supporting a macro-friendly, high-protein diet as part of a balanced nutrition plan
- OPTIMIZED SPORTS NUTRITION: PhD collaborates closely with research institutes and sports scientists to tailor the ingredients of all products to specific training purposes
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Fitnesshock Protein Bars No Sugar Added, Low Carb, High Fiber Snacks – 3 Delicious Chocolate Flavors | Variety Flavour Box | 12x50g
FitnesSHOCK
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FitnesSHOCK
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
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IQBAR Peanut Butter Chip Keto Protein Bars, 12-Count, Gluten Free, Low Carb, Vegan Snacks
IQBAR
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IQBAR
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.
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Snickers - High Protein Bars | Low Sugar, Only 2g of Sugar per bar, Hazelnut and Milk Chocolate Flavour, 12 x 57g Box, 20g Protein
Snickers
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Snickers
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.
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FULFIL Vitamin and Protein Bars (15 x 55 g Bars) — Chocolate Salted Caramel Flavour — 20 g High Protein, 9 Vitamins, Low Sugar
Fulfil
Fulfil
FULFIL Vitamin and Protein Bars (15 x 55 g Bars) — Chocolate Salted Caramel Flavour — 20 g High Protein, 9 Vitamins, Low Sugar
Why We Love It
- High protein, low sugar snack.
- Packed with 9 essential vitamins.
- Indulgent yet nutritious flavor.
Main Highlights
- HIGH PROTEIN and LOW SUGAR BARS: Each 55g bar contains 20g of protein, less than 3 grams of sugar and only 204 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. Our Chocolate Salted Caramel Flavour contains an indulgent milk chocolate coating surrounding a soft, silky salted caramel centre topped with a layer of crispy pieces
- 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
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PhD Nutrition Smart Plant Bar Low Calorie, High Protein Low Sugar Vegan Protein Bar/Protein Snacks, Salted Caramel Flavour, 20g of Plant Protein, 64g Bar (12 Pack)
PhD
4% OffFree Shipping
PhD
PhD Nutrition Smart Plant Bar Low Calorie, High Protein Low Sugar Vegan Protein Bar/Protein Snacks, Salted Caramel Flavour, 20g of Plant Protein, 64g Bar (12 Pack)
4% OffFree Shipping
Why We Love It
- Convenient on-the-go protein source.
- Promotes guilt-free snacking.
- Aids in weight loss.
Main Highlights
- Convenient and Tasty: PHD Smart Plant Protein Bar is designed for on-the-go convenience. It features a super soft protein core, caramel and protein crispies for a satisfying crunchy texture.
- Guilt-Free Snacking: Each bar is topped with a smooth chocolate coating, ensuring guilt-free snacking while keeping your dietary macros in check. GMO-free and Palm Oil Free
- Nutritional Bars: These bars deliver 20g of high-quality plant protein and less than 1g of sugar per serving, making it a macro-friendly option that's also palm oil-free.
- Weight Loss Aid: Ideal for pre-workout snacking or post-workout recovery, these bars are designed to provide a protein boost when needed, aiding in weight loss through a calorie deficit.
- Versatile and Suitable for All: Suitable for both men and women; Smart plant bars also serve as versatile toppings for homemade recipes, making them a great addition to a lean lifestyle.
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Yubi Variety Box 12 Pack - Protein Bars - 99 Calories, High Protein, High Fibre, Low Sugar, Gluten Free and Dairy Free - Healthy Snacks/Nutrition Bar - Chocolate Bars - 420g
Yubi Bar
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Yubi Bar
Yubi Variety Box 12 Pack - Protein Bars - 99 Calories, High Protein, High Fibre, Low Sugar, Gluten Free and Dairy Free - Healthy Snacks/Nutrition Bar - Chocolate Bars - 420g
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Why We Love It
- Tastes just like chocolate.
- Low in sugar.
- Eco-conscious and vegan.
Main Highlights
- 🌱 PROOF IS IN THE TASTING – We have spent years developing a protein bar which tastes just like a chocolate bar. Find out for yourself what all the fuss is about.
- 🍬 LOW SUGAR, 99 CALORIES - We take pride in offering products that are both low in sugar and low in calories, allowing you to enjoy a healthier option without sacrificing flavour.
- 🌾 GLUTEN & DAIRY FREE - Crafted in a gluten and dairy free facility, YuBi Bars are made for everyone.
- 😍 DELICIOUS FLAVOUR – With four delicious flavours to chose from, you will be sure to find your favourite in no time.
- 💚 VEGAN, RAINFOREST ALLIANCE CHOCOLATE - Manufactured in a vegan facility, YuBi Bars are enrobed in rich Rainforest Alliance Chocolate, ensuring a delightful and eco-conscious treat for all chocolate enthusiasts.
- 🌸 SUITABLE FOR MULTIPLE DIETARY REQUIREMENTS - All our bars are suitable for individuals following vegan, diabetic and coeliac diets, offering a delicious and inclusive option for a variety of dietary preferences and restrictions.
- 🌍 COMMITMENT TO SUSTAINABILITY - Made in the UK with 100% plant-based ingredients and packaged responsibly in recyclable FSC cardboard packaging, we are always looking for innovative ways to improve our carbon footprint.