10 Best Low Sugar High Fibre Protein Bars in The UK

Last updated on 16/07/2025

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FitnesSHOCK High Protein Bars - High 20G Protein Content Protein Bar With No Added Sugar, Low Calorie Low Carb High Fibre, Banana Split Flavour 12Pcs 60G

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Why We Love It

Delicious banana split flavor.
High in protein for energy.
Guilt-free and healthy snack.

Main Highlights

UNIQUE TASTE: Enjoy the creamy, sweet taste of a classic banana split in every bite. This protein bar combines the rich flavor of ripe bananas with high-quality ingredients to provide you with a delicious and nutrient-dense snack on the go.
RICH IN PROTEIN: Each bar provides a robust 20 grams of protein, supporting muscle recovery and growth. Whether you're an athlete or lead an active lifestyle, this protein-packed snack keeps you fueled throughout the day.
TOP NUTRITIONAL VALUE: Low in carbs with only 4 grams and 5 grams of fat, this bar offers a guilt-free indulgence. It's palm oil-free and non-GMO, making it a nutritious and satisfying option for your daily snacking needs.
NO ADDED SUGAR: Enjoy dessert every day without the guilt! Our bars contain no added sugar or flour, making them ideal for those following a low-sugar diet. Satisfy your sweet tooth while sticking to your healthy eating goals.
EAT ON-THE-GO: Non-glazed and easy to carry, this bar is perfect for life on the move. Slip it into your bag for a quick, crumb-free snack wherever you are—whether you're at the gym, at work, or on a hike.

Huel Complete Nutrition Bar, 12 x 51g Bars, Peanut Caramel, High Protein Bar, Plant-Based Protein Bars, Low Sugar, High Fibre, High-Protein Snack with Vegan Chocolate, Under 200 Calories

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Why We Love It

Rich, indulgent vegan chocolate.
High-protein, guilt-free snack.
Certified V-label, low sugar.

Main Highlights

HIGH-PROTEIN COMPLETE NUTRITION BAR: Huel Complete Nutrition Bar is a satisfying snack combining indulgent vegan chocolate, smooth caramel, and balanced nutrition. Each bar delivers up to 14g of plant-based protein, 26 essential vitamins and minerals, and under 200 calories.
CHOCOLATE-COVERED, ON-THE-GO SNACK: Enjoy a delicious caramel and chocolate bar anytime, anywhere. Perfect for curbing hunger between meals, pre-gym fuel, or a post-workout boost—just grab and go.
PACKED WITH NUTRIENTS & LOW IN SUGAR: With high fibre, plant-based protein, and low sugar, this bar helps support energy, digestion, and muscle function, keeping you full and satisfied.
SCIENCE-BACKED HEALTH BENEFITS: Delivers over 170 research-backed health benefits per bar. Formulated with nutrients that support immunity, reduce tiredness and fatigue, contribute to energy metabolism, help maintain healthy hair, skin, and nails, and more.
100% VEGAN & NON-GMO: Plant-based and free from artificial flavours and colourings. Low in sugar and non-GMO, Huel Complete Nutrition Bar is a clean, nutritious snack designed to fuel your day.

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

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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

JB's TREK High Protein Low Sugar Choc Caramel Bar - Plant-based protein - High Fibre - 12 x 55g bars

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Why We Love It

Plant-based protein boost.
Delicious natural energy treat.
No artificial ingredients included.

Main Highlights

PACK OF 12 PROTEIN BARS - Includes 12 individually wrapped TREK Choc Caramel Bars – ideal for stocking your pantry or gym bag with a tasty, plant-powered snack that’s always ready when you are.
DELICIOUSLY NATURAL ENERGY – Coated in a smooth vegan chocolate alternative and infused with rich caramel flavour, these bars combine nature’s best ingredients for a feel-good treat that delivers lasting energy. Embrace the power of nature with TREK!
15G PLANT PROTEIN, LOW SUGAR – Each bar delivers 15g of plant-based protein and is naturally high in fibre, making it a filling and functional snack that supports energy levels and digestion throughout the day.
NATURAL ORIGIN INGREDIENTS – Packed with plant protein and fibre – no artificial sweeteners or additives. Just honest, wholefood nutrition you can trust with every bite. Available flavours: Choc Caramel, Choc Peanut Butter and Biscoff.
FUEL FOR YOUR EVERYDAY AND ADVENTURES – Whether you’re powering through a workout, tackling a hike, or just navigating a busy day, TREK high protein, low sugar bars helps fuel your everyday with natural energy – wherever your journey takes you.

The Big Little Bar - High Protein Bar, Low Sugar, High Fibre, GMO Free - Salted Caramel Caramba Flavour - 20 Pack - Protein Works

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Why We Love It

High-quality protein keeps you full.
Low sugar satisfies your sweet tooth.
Delicious salted caramel indulgence awaits.

Main Highlights

High in Protein: Each bar delivers 10g of high-quality protein to keep you fuller for longer and help support muscle maintenance and repair.
Low Sugar, Big Taste: With as little as 0.9g of sugar per bar, you get all the sweetness without the guilt.
High Fibre: Supports digestion and helps keep you feeling full for longer, making it easier to stay on track with your health goals.
Grab 'n' Go Protein Boost: Perfect for busy mornings, afternoon snacks or a late night treat when hunger strikes.
Salted Caramel Caramba: A rich and indulgent salted caramel protein bar, featuring a caramel flavour layer, crunchy soya nuggets, and a smooth milk chocolate coating.

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

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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

Reflex High Protein Bars – Twin 21g Protein Bars Low Calorie, Low Sugar, High Fibre, Vegetarian – Chocolate Protein Snacks – Great Taste & Texture (Salted Caramel Crunch, 12x60g)

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Why We Love It

High protein for muscle support.
Delicious taste with crispy texture.
Convenient snack for active lifestyles.

Main Highlights

High Protein, Low Sugar Protein Bars: each Reflex Twin Bar delivers 21g of complete protein from milk and soy isolates – helping to support muscle growth and recovery with just 185 kcal and 1.6g sugar per 60g bar for clean, lean fuel
Delicious Twin Format Design: two soft-centred, crispy chunks per pack – perfect high protein snacks for flexible snacking and portion control – enjoy both pieces or save one for later without compromising on freshness or flavour
A Satisfying Treat with Functional Benefits: with indulgent flavour options (Salted Caramel Crunch and Chocolate Toffee Crispy) Reflex protein chocolate bars offer a nougat-soft centre with crispy pieces and rich chocolate coating
Refuel Without Compromise: Reflex Twin Bars are made for busy, active lifestyles – enjoy on-the-go after the gym, between meals, or whenever you need a protein top-up without the extra sugar, calories or artificial fillers
High Fibre, Vegetarian Protein Bars, HFSS Compliant: made using only high-quality milk and soy protein isolates (no collagen or gelatine) - Reflex vegetarian, high fibre protein bars are a smart, feel-good high protein food snacking choice

High protein for muscle growth.
Delicious soft-baked texture.
Low sugar, perfect for snacking.

Main Highlights

20g High Protein Per Bar Fuels Active Lifestyles & Fitness Goals – Each Bulk Macro Munch bar contains a powerful 20g of protein, helping to support your daily intake whether you’re training, dieting, or looking for a satisfying, nutritious snack between meals.
Low Sugar Snack Healthier Alternative to Chocolate Bars – With less than 3g of sugar per bar, this guilt-free option delivers sweet satisfaction without the sugar crash. Ideal for those managing calories, cutting back on sugar, or following low-sugar diets.
Soft-Baked Triple Layer Texture Indulgent, Satisfying & Convenient – Enjoy a chewy, soft-baked base with layered textures and a smooth chocolate coating. Designed to offer a decadent feel with balanced macros and minimal sugar.
High in Fibre At least 6.8g Fibre Per Bar Each bar delivers around 7g of fibre .Great for anyone tracking macros or looking for fibre-rich snack choices that also taste amazing.
Convenient On-the-Go Protein Bar Great for Work, Gym, or Travel – Individually wrapped 62g bars are ideal for busy days. Keep one in your gym bag, desk drawer, or glove box for a clean, tasty, high-protein snack wherever life takes you.

Yubi Mix 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 like a chocolate bar.
Only 99 calories per serving.
Vegan and gluten-free.

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.

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

Free Shipping

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.

8.8

Excellent

We scanned 1607 products

We reviewed these offers relevant to the Low Sugar High Fibre 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 FitnesSHOCK, Huel, Misfits, JB's TREK, THE PROTEIN WORKS, Reflex, Bulk, Yubi Bar, 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 Sugar High Fibre Protein Bars in the market, we considered we took a deep dive into 8036 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 FitnesSHOCK High Protein Bars - High 20G Protein Content Protein Bar With No Added Sugar, Low Calorie Low Carb High Fibre, Banana Split Flavour 12Pcs 60G. We love many things about this product by FitnesSHOCK. What sets it apart from the competition is Delicious banana split flavor. , High in protein for energy. , Guilt-free and healthy snack. .
The best value product for most shoppers and where user satisfaction is continuously the highest is Huel Complete Nutrition Bar, 12 x 51g Bars, Peanut Caramel, High Protein Bar, Plant-Based Protein Bars, Low Sugar, High Fibre, High-Protein Snack with Vegan Chocolate, Under 200 Calories by Huel based on online reviews by bloggers, experts and online shoppers.
The biggest bargain at the moment for Low Sugar High Fibre Protein 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 Sugar High Fibre 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 Sugar High Fibre Protein Bars in The UK

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We scanned 1607 products

We concluded that: