10 Best Low Calorie Protein Breakfast Bars in The UK

Last updated on 04/07/2025

Advertising disclosure

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

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

12% OffFree Shipping

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.

Barebells Soft Protein Bars | 16g protein Healthy Snacks, Protein Snacks for Breakfast, Sugar Free Chocolate, Low Carb – 12 x 55g (Coco Choco)

Free Shipping

Why We Love It

Irresistible chocolate-coconut blend.
Energy-boosting, low-sugar snack.
Full flavor, healthy indulgence.

Main Highlights

LOCO FOR COCO CHOCO - Experience the irresistible blend of chocolate and coconut in Barebells' latest creation, the Coco Choco soft protein bar.
HIGH IN PROTEIN, LOW IN SUGAR - Packed with 16g of protein and with 2g of sugar, our Coco Choco protein bar is your perfect snack companion, keeping you fueled and satisfied.
NO ADDED SUGAR, FULL FLAVOR - Our commitment to incredible taste shines through in every bite of the Coco Choco bar. Enjoy the full, rich flavors of chocolate and coconut without the added sugar, making it an ideal choice for those managing their sugar intake.
WE BELIEVE IN HAPPY EATING AND HEALTHY LIVING - the Barebells protein bar is famous for its soft texture and amazing taste. Never compromising on flavor, Barebells protein bars are here to wow your taste buds. Whether you're looking for a post-workout recovery snack or just a tasty treat to get you through the day, our Coco Choco bar is designed to provide you with sustained energy.
INDULGE IN COCONUT - Join the craze for our Coco Choco protein bars, a soft and indulgent snack that doesn't compromise on flavour. Perfect for Barebells enthusiasts and chocolate lovers alike.

Grenade High Protein, Low Sugar Bar - Birthday Cake, 12 x 60 g

29% Off

Why We Love It

High protein, low sugar content. Luxury in a healthy snack. Certified for athletes' use.

Main Highlights

HIGH PROTEIN: Packed with protein, with over 20 g per bar
LOW SUGAR: Low in sugar, with just 1.6 g per bar
GUILT FREE TREAT: Each triple-layered bar consists of protein nougat, topped with a vanilla layer and coated in white chocolate and sprinkles
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

Keto Keto Bars 12 x 50g Keto Snacks Weight Loss | Keto Diet, Sugar Free Snack, Meal Replacement Bar | Healthy Snacks, Low Carb Food | Low Calorie, Vegan Food, Breakfast Bar (Coconut Cashew)

Free Shipping

Why We Love It

Tasty, healthy ketogenic snack.
100% Ketogenically approved vegan bars.
No sugar spike ensured.

Main Highlights

Delicious Vegan Treats - After 3 years of development, Keto Keto have created the ultimate tasty, healthy snack for those on a fat loss, pure keto or atkins diet.
Truly Keto Bar - All of our vegan products have achieved 100% Ketogenic scores, verified by Ketone Meter Testing - Throw the keto cookbook out, we have done the hard work for you. We have multiple flavours which include sugar free chocolate making our bars the ultimate keto snack.
No Sugar Spike - Unlike most protein bars, Keto Keto bars are pure and contain no ingredients which spike blood sugar, making them truly ketogenic and a great diabetic food. They are also both dairy free and vegan friendly.
Two Delicious Flavours - Truly tasty keto food is hard to come by. That's why all of our keto snacks and treats are made with taste as a priority. Simply put, our customers LOVE our bars, and we are certain that you will too.
Sugar Free Energy Bar - Energy Bars typically provide lots of carbohydrates. Whether you are on an atkins diet or a keto diet, our bars priovide you with the good fats you need to maintain your goals. Ditch the keto diet pills and grab our tasty bars!

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

Free Shipping

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

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

Free 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

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)

Free Shipping

Why We Love It

Convenient, tasty, high-protein snack.
Guilt-free chocolate indulgence.
Aids weight loss seamlessly.

Main Highlights

Convenient and Tasty Protein Snack: PHD Smart Protein Bar is designed for on-the-go convenience. It features a soft whey 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 whey protein and less than 3g of sugar per serving, available in various flavors like Birthday Cake and White Chocolate Blondie.
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 bars also serve as versatile toppings for homemade recipes, making them a great addition to a lean lifestyle.

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

Free Shipping

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.

8.7

Excellent

We scanned 1690 products

We reviewed these offers relevant to the Low Calorie Protein Breakfast 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, Huel, BAREBELLS, Grenade, Keto Keto, N!CK'S, Misfits, PhD, 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 Calorie Protein Breakfast Bars in the market, we considered we took a deep dive into 8451 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) — Chocolate Salted 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 High protein, low sugar snack, Packed with 9 essential vitamins, Indulgent yet nutritious flavor.
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 Calorie Protein Breakfast Bars and the best cost-to-value ratio is Grenade High Protein, Low Sugar Bar - Birthday Cake, 12 x 60 gat Grenade with a 29% discount.
Our list of the best Low Calorie Protein Breakfast 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 Calorie Protein Breakfast Bars in The UK

Related Deals You Might Like for Low Calorie Protein Breakfast Bars

Warrior Raw Protein Bars – 12 x 75g Oat Bar Flapjacks – High Fibre, Low Sugar – Ideal Meal Replacement or Healthy Nutrition Energy Snacks – HFSS / GMP Certified – UK Made (Salted Caramel)

Perkier Variety Box,18 bars, 6 Flavours, Vegan, Gluten Free, Protein, High Fibre, Lower Sugar Snack, Natural Ingredients, Lower Calorie, Healthy, No Palm Oil, Nut Bar, Carbon Neutral

SlimFast Meal Replacement Shake for Weight Loss & Balanced Diet, Vitamins and Minerals, Low Calorie, High Protein, Blueberry Flavour, 16 servings, 584 g, Packaging May Vary

The Gut Stuff – High Fibre Fruit & Nut Bars – Mixed Flavours – 12 x 35g Bar Box – Gut Friendly Snack, Gluten Free, Vegan, Low Calorie, All Natural

Zombie Fruit Bars, Strawberry & Blackberry (10 Bars, 2 Flavours), 100% Dried Fruit, Healthy Snacks for Adults, Kids, Low Calorie, Gluten Free, Vegan, Halal, Bulk, Real Fruit, No Added Sugar, Natural

The Good Bite’s High Protein Meal Prep Manual: Delicious, easy low-calorie recipes with full nutritional breakdowns & food-tracking barcodes

Energy Bar Recipes: Easy and Tasty Homemade Granola and Protein Bars for Breakfast and Snack

YuBi Protein Flapjacks - 12 Bar Variety Pack - Peanut Crunch and Chocolate Crisp Protein Bars, 13g Protein, High Fibre, Low Sugar, Gluten Free and Dairy Free, 12x50g

FUEL10K Double Chocolate Breakfast Oat Cookie, High Protein & Fibre, 50 g (Pack of 12)

We scanned 1690 products

We concluded that: