10 Best High Protein Breakfast Bars in The UK

Last updated on 16/07/2025

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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

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

Grenade High Protein, Low Sugar Bar - White Chocolate Cookie, 12 x 60 g (Packaging May Vary)

17% Off

Why We Love It

Packed with protein goodness.
Sugar levels kept low.
Indulgent, yet healthy snack.

Main Highlights

HIGH PROTEIN: Packed with protein, with over 22 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 white caramel and coated in white chocolate and cookie 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

Nature Valley Protein Peanut & Chocolate Gluten Free Cereal Bars, 40 g (Pack of 26 )

Why We Love It

Ideal for on-the-go snacks.
High in protein and fibre.
No artificial flavours or preservatives.

Main Highlights

Nature Valley Protein Cereal Bars contain 10g of protein and are high in fibre
Nature Valley Protein Cereal Bars are the perfect on the go gluten free snack for any time of day
Why not also try Nature Valley Crunchy Oats & Dark Chocolate Cereal Bars or Nature Valley Nut Butter Peanut Biscuits?
Packaging may vary

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.

Snickers - HI Protein Bars | Low Sugar Bars, Only 1g of Sugar per bar, Dark Chocolate, 12 x 57g Pack, 20g Protein

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Why We Love It

Iconic taste with protein boost.
Guilt-free indulgence, low sugar.
Perfect snack, 215 calories.

Main Highlights

Protein power: Craving Snickers? Now you can get the iconic taste you love with a protein boost! Our Snickers dark chocolate low sugar Hi-protein bars deliver 20g of protein, with just 1g sugar per bar.
Layers of indulgence: Each bar is packed with crunchy peanuts, chewy caramel and coated in rich dark chocolate.
Fuel your day: With only 215 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 and peanuts. May contain nuts, egg and gluten.

Trek High Protein Flapjack Cocoa Oat, 50 g - Gluten Free Bars – Healthy Snack Bars – Plant Based Protein - Vegan Bars (Pack of 16 Bars) | L0572375-P107199021-M107199013

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Why We Love It

Supports an active lifestyle.
Ideal for vegans.
Naturally protein-rich snack.

Main Highlights

PROTEIN flapjacks delivering long lasting energy to keep you going
PLANT-BASED - each bar contains 9g of plant-based protein, is a source of fibre and vegan friendly
SOURCE OF FIBRE - Perfect nourishing and filling healthy snack with oats
IDEAL SNACK for active people, sport and fitness fans who are kind to their body
DELICIOUS - covered with a top layer of chocolate flavour topping, transforming the humble oatiness into a deep and satisfying taste

Bodybuilding Warehouse

Premium LUX Protein Flapjack Bars - High Protein, Low Sugar Snack – Bodybuilding Warehouse - Blueberry Yogurt (24 x 75g)

9% OffFree Shipping

Why We Love It

High protein for lasting energy.
Low sugar and high fibre.
Delicious flavours to choose from.

Main Highlights

LUX PROTEIN FLAPJACK - These snack bars contain 20g of protein, very low sugar and high fibre. Protein keeps you full for longer, boosts energy and mood and is helpful for muscle building and repair. Perfect at any time of the day. Great for when you're on the go.
BENEFITS - Great choice for a snack or dessert. Ideally Incorporating complex carbohydrates in combination with protein into your post-workout routine can assist with muscle growth and recovery.
OAT-BASED BARS - A great source of complex carbohydrates. They provide slow-release and sustainable energy. This is great if you’re trying to control your calorie intake.
FLAVOURS - Available in 5 delicious flavours and 2 sizes (12 & 24 packs): Birthday Cake, Blueberry Yogurt, Chocolate Chunk, Mint Chocolate Chunk & Chocolate Orange. Suitable for vegetarians.
SERVING SIZE - 1 Bar (75g) - That’s 20g of protein per bar!

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

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Why We Love It

All natural vegan snack bars.
High protein, high fibre content.
Sustainable and ethically produced.

Main Highlights

6 DELICIOUS FLAVOURS – 18 Multipack of 3 x Salted Caramel Dark Chocolate, 3 x Peanut, 3 x Madagascan Vanilla Dark Chocolate, 3 x Cocoa & Cashew, 3 x Peanut Dark Chocolate & 3 x Cranberry
ALL NATURAL INGREDIENTS - Tasty vegan bars with no artificial preservatives, sweeteners, colours, flavours and lower sugar
PROTEIN & HIGH FIBRE SNACK - Healthy breakfast bars make a great alternative to biscuits and chocolate. Suitable for on-the-go, post-workout, lunchboxes or guilt-free morning or afternoon snacks
GLUTEN FREE AND VEGAN - All our bars are vegan, vegetarian, gluten free and low calorie
SUPPORTS GUT HEALTH - Every bar contains at least 25% of your daily recommended fibre
CHEWY FRUIT AND NUT BAR – These low calorie crunchy and chewy cereal bars with slow-release energy, are a great healthy snack for adults and kids
SUSTAINABLE & ETHICAL – Plant based, carbon neutral, no palm oil, B-Corp and recyclable packaging. Perkier is a “Buy Women Built” company

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

17% OffFree Shipping

Why We Love It

Muscle-building high protein content.
Optimum for keto diet.
Amazing tasting chocolate snack.

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

FUEL10K Salted Caramel Oat Bars, High in Protein & Fibre, 45 g (Pack of 16)

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Why We Love It

High-quality protein for energy.
Luxurious salted caramel flavor.
Convenient vegan snack option.

Main Highlights

HIGH PROTEIN: Each bar contains 9g of high-quality protein, providing a satisfying and energising snack.
LUSCIOUS SALTED CARAMEL INFUSION: Immerse yourself in the luxurious essence of creamy salted caramel, crafting a delectable snack that satisfies your sweet cravings with every heavenly bite.
PERFECT ON-THE-GO HEALTHY SNACK: Ideal for a quick breakfast or a nutritious snack anytime, anywhere, made with quality oats and ingredients for a healthy start to your day.
VEGAN-FRIENDLY: These oat bars cater to vegans, offering a protein-packed, on-the-go breakfast or snack option bursting with rich salted caramel flavours.
PACK OF 16: Includes sixteen 45g bars, ensuring you have a convenient supply for your breakfasts or snacks.

8.9

Excellent

We scanned 1690 products

We reviewed these offers relevant to the High 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, Grenade, Nature Valley, Huel, Snickers, JB's TREK, Bodybuilding Warehouse, Perkier, Warrior, FUEL10K, all of which have a reputation for consistently delivering high-quality products that users love and innovative approaches for function & design.

For the best High 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 Grenade High Protein, Low Sugar Bar - White Chocolate Cookie, 12 x 60 g (Packaging May Vary) by Grenade based on online reviews by bloggers, experts and online shoppers.
The biggest bargain at the moment for High Protein Breakfast Bars and the best cost-to-value ratio is Warrior Crunch - High Protein Bars - 20g Protein Each Bar - Low Carb, Low Sugar Snack - 12 Pack x 64g (Peanut Butter Cup)at Warrior with a 17% discount.
Our list of the best High 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 High Protein Breakfast Bars in The UK

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We scanned 1690 products

We concluded that: