10 Best Protein Bar Low Sugar in The UK

Last updated on 04/07/2025

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Best Choice

9.7

Exceptional

Save 17%

Grenade

Grenade High Protein, Low Sugar Bar - Chocolate Chip Salted Caramel, 12 x 60 g

17% Off

Why We Love It

Packed with over 20g protein.
Only 1.4g sugar per bar.
Perfect post-workout tasty treat.

Main Highlights

HIGH PROTEIN: Packed with protein, with over 20 g per bar
LOW SUGAR: Low in sugar, with just 1.4 g per bar
GUILT FREE TREAT: Each triple-layered bar consists of protein nougat, topped with a tasty salted caramel layer and coated in milk chocolate
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

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.

Bodybuilding Warehouse

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

9% 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!

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.

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

11% OffFree Shipping

Why We Love It

High protein for muscle recovery.
Ideal for Keto diet followers.
Maintains energy levels longer.

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

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.

PhD Nutrition Smart Protein Bar Low Calorie, Nutritional Protein Bars/Protein Snacks, High Protein Low Sugar, Chocolate Peanut Butter Flavour, 20g of Protein, 64g Bar (12 Pack)

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Why We Love It

Perfect for on-the-go protein.
Guilt-free, tasty snacking option.
Aids in weight loss.

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.

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

Fulfil Vitamin and Protein Bars (15 x 40g Bars) — Chocolate Hazelnut Whip Flavour — 14g High Protein, 9 Vitamins, Low Sugar

4% OffFree Shipping

Why We Love It

High protein, low sugar delights.
Delicious, nutritious, chocolate hazelnut bars.
Stay stocked with 15-pack.

Main Highlights

HIGH PROTEIN and LOW SUGAR BARS: Each 40g bar contains 14g of protein, 1.1 grams of sugar and only 149 kcal per serving. Great for a tasty treat or a post workout refuel
DELICIOUS AND NUTRITIOUS: FULFIL bars are not your average protein bar. Our Chocolate Hazelnut Whip Flavour contains an indulgent hazelnut centre covered in creamy milk chocolate and topped with crunchy hazelnut pieces. A ideal snack for chocolate lovers but with added benefits
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
9 VITAMINS: Each FULFIL bar contains 30 percent RDA for 9 essential vitamins to support you through everyday life

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

8.7

Excellent

We scanned 1556 products

We reviewed these offers relevant to the Protein Bar Low Sugar 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 Grenade, Snickers, Bodybuilding Warehouse, Mars, Warrior, PhD, Fulfil, FitnesSHOCK, 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 Low Sugar in the market, we considered we took a deep dive into 7781 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 Grenade High Protein, Low Sugar Bar - Chocolate Chip Salted Caramel, 12 x 60 g. We love many things about this product by Grenade. What sets it apart from the competition is Packed with over 20g protein. , Only 1.4g sugar per bar. , Perfect post-workout tasty treat.
The best value product for most shoppers and where user satisfaction is continuously the highest is Snickers - HI Protein Bars | Low Sugar Bars, Only 1g of Sugar per bar, Dark Chocolate, 12 x 57g Pack, 20g Protein by Snickers based on online reviews by bloggers, experts and online shoppers.
The biggest bargain at the moment for Protein Bar Low Sugar and the best cost-to-value ratio is Mars - Salted Caramel Low Sugar Chocolate Hi Protein Bars | 12 x 57g Pack, Only 2g of Sugar per bar, High Protein Energy Snack, 18g Proteinat Mars with a 22% discount.
Our list of the best Protein Bar Low Sugar 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 Low Sugar in The UK

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We scanned 1556 products

We concluded that: