10 Best Low Fat Low Sugar Protein Bars in The UK

Last updated on 16/07/2025

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9.9

Exceptional

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Grenade

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

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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

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

FitnesSHOCK High Protein Bars Mix Box - High 20G Protein Content Protein Bar With No Added Sugar, Low Calorie Low Carb High Fibre Flavour, 12Pcs 60G

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Why We Love It

Delicious flavors for variety lovers.
High protein for muscle support.
Guilt-free, low-carb indulgence.

Main Highlights

UNIQUE TASTE: Enjoy the best of all worlds with this 12-bar mix box featuring Pistachio Cake, Banana Split, and Raspberry Parfait flavors. Each bar offers a unique, delicious taste experience—from the nutty richness of pistachio to the creamy sweetness of banana to the fruity freshness of raspberry. Perfect for those who love variety in their protein-packed snacks!
RICH IN PROTEIN: Each bar provides a robust 20 grams of protein, supporting muscle recovery and growth. Whether you're an athlete or lead an active lifestyle, this protein-packed snack keeps you fueled throughout the day.
TOP NUTRITIONAL VALUE: Low in carbs with only 4 grams and 5 grams of fat, this bar offers a guilt-free indulgence. It's palm oil-free and non-GMO, making it a nutritious and satisfying option for your daily snacking needs.
NO ADDED SUGAR: Enjoy dessert every day without the guilt! Our bars contain no added sugar or flour, making them ideal for those following a low-sugar diet. Satisfy your sweet tooth while sticking to your healthy eating goals.
EAT ON-THE-GO: Non-glazed and easy to carry, this bar is perfect for life on the move. Slip it into your bag for a quick, crumb-free snack wherever you are—whether you're at the gym, at work, or on a hike.

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

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.

The Big Little Bar - High Protein Bar, Low Sugar, High Fibre, GMO Free - Chocolate Peanut Punk Flavour - 20 Pack - Protein Works

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Why We Love It

High protein for lasting fullness.
Low sugar for guilt-free indulgence.
Delicious chocolate peanut flavor.

Main Highlights

High in Protein: Each bar delivers 10g of high-quality protein to keep you fuller for longer and help support muscle maintenance and repair.
Low Sugar, Big Taste: With as little as 0.9g of sugar per bar, you get all the sweetness without the guilt.
High Fibre: Supports digestion and helps keep you feeling full for longer, making it easier to stay on track with your health goals.
Grab 'n' Go Protein Boost: Perfect for busy mornings, afternoon snacks or a late night treat when hunger strikes.
Chocolate Peanut Punk: A bold and nutty chocolate peanut protein bar, packed with roasted peanuts, a low-sugar caramel layer, crunchy soya nuggets, and a smooth milk chocolate coating.

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

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Why We Love It

Epic taste with high protein.
Uncompromised Snickers flavor.
Great for post-workout snacking.

Main Highlights

The epic taste of Snickers White with 20g of protein and only 2g sugar? Now that’s satisfying!
Snickers White 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 218 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.

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.

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

4% OffFree Shipping

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

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

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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

8.7

Excellent

We scanned 308 products

We reviewed these offers relevant to the Low Fat Low Sugar Protein 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 Grenade, Fulfil, FitnesSHOCK, Premier Protein, Snickers, THE PROTEIN WORKS, N!CK'S, 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 Fat Low Sugar Protein Bars in the market, we considered we took a deep dive into 1541 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 Cookie Dough, 12 x 60 g (Packaging May Vary). We love many things about this product by Grenade. What sets it apart from the competition is High protein, low sugar content. , Indulgent layered flavor experience. , Certified for athlete consumption.
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 Low Fat Low Sugar Protein Bars and the best cost-to-value ratio is FitnesSHOCK High Protein Bars Mix Box - High 20G Protein Content Protein Bar With No Added Sugar, Low Calorie Low Carb High Fibre Flavour, 12Pcs 60Gat FitnesSHOCK with a 10% discount.
Our list of the best Low Fat Low Sugar Protein 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 Fat Low Sugar Protein Bars in The UK

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We scanned 308 products

We concluded that: