10 Best Protein Bar in The UK

Last updated on 22/07/2025

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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

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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 OREO Protein Bar - High Protein, Low Sugar, 12 x 60 g

20% Off

Why We Love It

Protein-packed delight in each bite.
Enjoy low sugar indulgence.
Certified for athletes and military.

Main Highlights

HIGH PROTEIN: Packed with protein, with over 21 g per bar
LOW SUGAR: Low in sugar, with just 1 g per bar
GUILT FREE TREAT: Each triple-layered bar consists of genuine OREO Vanilla, a protein nougat loaded with authentic OREO cocoa, topped with low sugar chocolate, and topped with zero sugar OREO Pieces
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

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

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Why We Love It

Satisfies protein and chocolate cravings.
Indulgent low calorie snack.
Promotes happy, healthy living.

Main Highlights

SALTED PEANUT CARAMEL - Soft bar featuring a fluffy caramel core, a touch of salty peanut crunch, all coated in milk chocolate.
HIGH IN PROTEIN - Protein bars from Barebells contain 16g of protein and just a few grams of sugar per serving which makes it the perfect low calorie snack.
PROTEIN SNACKS ON THE GO - Barebells is the ultimate choice for pre- and post-workout, as high protein snack at the office or for anyone who wants to satisfy their chocolate cravings.
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.
PALM OIL-FREE AND NO ADDED SUGAR - Enjoy the reassurance that all our bars are crafted without palm oil and made without any added sugars

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.

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

8% OffFree Shipping

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

PhD Smart Hight Protein Bar Low Sugar, Nutritional Protein Bars/Protein Snacks, Chocolate Raspberry Flavour, 20g of Protein, 64g Bar (12 Pack)

20% OffFree Shipping

Why We Love It

Convenient and tasty.
Guilt-free snacking.
High-quality protein source.

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.

Bodybuilding Warehouse

BW Premium LUX 20g High Protein Flapjack Bars 24 x 75g - Oat Based Low Sugar Snack - Bodybuilding Warehouse (Chocolate Orange)

20% OffFree Shipping

Why We Love It

High protein content for energy.
Low sugar for guilt-free snacking.
Delicious flavors to satisfy cravings.

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!

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

12% OffFree Shipping

Why We Love It

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

Main Highlights

High protein content: 50% protein
Max. 0,8 g sugar per bar
Reduced in carbs: 30% less carbohydrates than traditional chocolate bars
Amazing taste and great fluffy texture; Crispy Cookie and Crispy Peach: with crunchy crisp pieces
Without palm oil

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 (Chocolate Peanut Butter)

26% OffFree Shipping

Why We Love It

Low in sugar content.
High in protein.
Great pre-workout snack.

Main Highlights

HUGE 21 GRAMS OF PROTEIN PER BAR - That's more than 3 whole eggs! Our bars are packed with high quality milk protein to help muscles re-build and recover after training and to help you meet your daily protein intake
LOW IN SUGAR, HIGH IN FIBRE - With only 3.5g sugar per bar, these are some of the lowest sugar protein chewy granola bars ever released! Also high in fibre to help control blood sugar levels
USE PRE OR POST WORKOUT - Eat pre workout for an energy boost or post workout to help aid recovery. Ideal for cutting or bulking when counting your macros
GREAT TASTE! CHOCOLATE BROWNIE - Chewy granola oat bar that can be eaten as a filling snack to help keep you satisfied until your next meal and curb cravings for high sugar snacks
PACK OF 12 x PROTEIN BARS - Save money with this multipack of 12 high protein bars. Store at home to eat as and when needed. Can be used as part of a healthy diet to help manage weight gain

Nature Valley Protein Peanut & Chocolate Gluten Free Cereal Bars 12 x 40g

25% OffFree Shipping

Why We Love It

Great for on-the-go snacking.
High in protein and fibre.
No artificial ingredients used.

Main Highlights

Protein snack bar, ideal for on-the-go snacks or a post workout treat
Nature Valley protein cereal bar
High in protein, high in fibre, gluten free; containing 20 Percent of your daily protein needs
Great tasting bars with no artificial flavours, colours or preservatives
Suitable for vegetarians; carefully selected ingredients

8.7

Excellent

Save 25%

We scanned 1690 products

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

For the best Protein Bar 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 OREO Protein Bar - High Protein, Low Sugar, 12 x 60 g by Grenade based on online reviews by bloggers, experts and online shoppers.
The biggest bargain at the moment for Protein Bar and the best cost-to-value ratio is 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 (Chocolate Peanut Butter)at Warrior with a 26% discount.
Our list of the best Protein Bar 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 Protein Bar in The UK

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We scanned 1690 products

We concluded that: