10 Best High Protein Low Sugar Bars in The UK

Last updated on 04/07/2025

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Snickers - Milk Chocolate Low Sugar Protein Bars | 12 x 57g Pack, Only 2g of Sugar per bar, Hi Protein Energy Snack, 20g Protein

Why We Love It

Snickers flavor with more protein.
Less sugar, still satisfyingly delicious.
Ideal post workout snack.

Main Highlights

The epic taste of Snickers with 20g of protein and only 2g sugar? Now that’s satisfying!
Snickers Hi Protein Low Sugar boasts all the caramel, nougat, and peanut flavours you know and love from the iconic Snickers bar, covered in a delicious chocolatey coating.
Only 217 kcals 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.

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

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.

Mars - High Protein Energy Snack Bar | Low Sugar, Only 2g of Sugar per Bar, Caramel, Nougat and Real Milk Chocolate, Contains 18g Protein 12 x 57g Pack

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Why We Love It

Delicious chocolate and caramel blend.
High protein with low sugar.
Convenient post-workout snack option.

Main Highlights

Are you bored of poor tasting protein bars? Are you ready to turn up the taste with Mars? You can now with one of the Nation’s favourite chocolate bars with the delicious combination of caramel, real milk chocolate and nougat all with 18g protein
Contains only 2g of sugar
Every case contains 12 individually wrapped bars perfect for a post workout snack
Only 201 kcals per bar. Not suitable for vegetarians.

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.

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

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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

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

29% Off

Why We Love It

High protein, low sugar content.
Indulgent layered flavor experience.
Certified for athlete consumption.

Main Highlights

HIGH PROTEIN: Packed with protein, with over 21 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 caramel and coated in milk chocolate and chocolate chips
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 )

4% OffFree Shipping

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

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!

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

22% OffFree Shipping

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.

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We scanned 1571 products

We reviewed these offers relevant to the High Protein Low Sugar 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 Snickers, Fulfil, Mars, Premier Protein, Grenade, Nature Valley, Bodybuilding Warehouse, JB's TREK, 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 Low Sugar Bars in the market, we considered we took a deep dive into 7856 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 Snickers - Milk Chocolate Low Sugar Protein Bars | 12 x 57g Pack, Only 2g of Sugar per bar, Hi Protein Energy Snack, 20g Protein. We love many things about this product by Snickers. What sets it apart from the competition is Snickers flavor with more protein, Less sugar, still satisfyingly delicious, Ideal post workout snack.
The best value product for most shoppers and where user satisfaction is continuously the highest is FULFIL Vitamin and Protein Bars (15 x 55 g Bars) — Chocolate Salted Caramel Flavour — 20 g High Protein, 9 Vitamins, Low Sugar by Fulfil based on online reviews by bloggers, experts and online shoppers.
The biggest bargain at the moment for High Protein Low Sugar Bars and the best cost-to-value ratio is Grenade High Protein, Low Sugar Bar - Chocolate Chip Cookie Dough, 12 x 60 g (Packaging May Vary)at Grenade with a 29% discount.
Our list of the best High Protein Low Sugar 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 Low Sugar Bars in The UK

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We scanned 1571 products

We concluded that: