10 Best Kids Protein Bars in The UK

Last updated on 10/08/2025

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FULFIL Vitamin and Protein Bars (15 x 55 g Bars) — White Chocolate Peanut and Caramel Flavour — 20 g High Protein, 9 Vitamins, Low Sugar

Why We Love It

Balanced nutrition meets delightful taste.
Enriched with essential vitamins.
Ideal for everyday adventures.

Main Highlights

HIGH PROTEIN and LOW SUGAR BARS: Each 55g bar contains 20g of protein, less than 3 grams of sugar and only 211 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. A bright twist on a FULFIL favourite White chocolate encases a layer of caramel mixed with crunchy crispies surrounding a rich peanut centre
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)

26% 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

TRIBE 3-Layered Protein Flapjacks - Choc Peanut - Great-Tasting Natural Energy - Vegan, Dairy Free & Gluten Free (12 x 50g Bars)

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Why We Love It

Guilt-free indulgence with great taste.
Enhances active lifestyle with protein.
Ideal snack, vegan and gluten-free.

Main Highlights

😋 GREAT TASTE: 3 layered flapjack packed full of high quality, natural ingredients. Trust Pilot rating 4.7*. Tastes delicious! 💪 7G PLANT PROTEIN: 7g plant protein in every bar to fuel the active lifestyle. 💥 NATURAL INGREDIENTS: every bar is plant based, with added vitamins/minerals for energy release throughout the day. ✔️1G SAT FATS: only 1g of sat fats in every bar 🌱 VEGAN, GLUTEN & DAIRY FREE - ideal as a snack throughout the day

N'eat Natural Energy Bars - Healthy Snack for Adults and Kids - Palm Oil Free Low Calorie Snacks - Vegan Snacks and Fruit Bar Bursting with Natural Energy - 16x45g Fruit Bars - Rainbow Selection Box

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Why We Love It

Delicious variety of flavours.
Natural and wholesome ingredients.
Eco-friendly and sustainable choice.

Main Highlights

Rainbow Selection - Try all of our 5 delectable flavours in one handy box! Great for mixing up your healthy snacks and daily dose of fruit and fibre with a delicous twist. All of our natural energy bars are bursting with flavour and energy, our rainbow selection box is perfect for the adventurous.
Natural Energy Fruit Bar - Made with only natural ingredients, our soft and chewy fruit energy bars are packed with flavour and energy. Free from added sugar, preservatives, wheat, dairy, and palm oil, these high-protein, wholefood healthy snacks are perfect for breakfast or on-the-go snacking.
Rich in Protein & Fibre - N'Eat sugar-free energy bars are packed with fibre and protein, essential for sustained energy and strength during sports or physical activity. These nutrients also support muscle growth, repair, and a healthy digestive system. Perfect healthy snacks for those that are always on the move!
All Natural Ingredients - Our Vegan Snacks are made with ethically sourced, sustainable ingredients, our protein bars contain no added sugar, preservatives, or palm oil. Deliciously nutritious, they’re perfect for vegans and vegetarians and our energy bars are proudly approved by the Vegan Society.
No Palm Oil - Our energy bars are not only delicious but also eco-friendly. By supporting Born Free and partnering with Orangutan Appeal, we help protect wildlife ecosystems threatened by deforestation caused by palm oil production, promoting a healthier planet for all.

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

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

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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.

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.

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.

Nakd Fruit & Nut Bar Variety Pack - Vegan - Healthy Snack - Gluten Free - 35g x 18 bars

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Why We Love It

Unique combination of natural ingredients.
Promotes clean, simple eating.
Ideal for on-the-go snacking.

Main Highlights

MADE WITH DELICIOUS NATURAL INGEDIENTS – a unique combination of fruit & nuts cold-pressed together without heat into tasty raw bars. Choose your favourite from our variety of mind-popping and popular flavours from Peanut Delight, Cocoa Delight to Blueberry Muffin and Salted Caramel.
nākd. RAW FRUIT & NUT BARS – are nothing like your average cereal, chocolate and breakfast bars. They have no artificial flavourings, colours or preservatives, we don’t’ add any sugar or honey but keep it real and simple, we just add natural ingredients. That’s it!
CLEAN, SIMPLE EATING – a snack bar containing 100% natural ingredients, no added sugar, is raw-cold pressed, has a source of fibre, vegan, gluten, dairy free, has no preservatives and is Kosher certified.
FIND YOUR FAVOURITES - This selection box features 3 each of our top 6 flavours including Blueberry Muffin and Peanut Delight
PERFECT SNACK - individually wrapped & sized for purses, backpacks, lunchboxes or snacking on-the-go

Yubi Variety Box 12 Pack - Protein Bars - 99 Calories, High Protein, High Fibre, Low Sugar, Gluten Free and Dairy Free - Healthy Snacks/Nutrition Bar - Chocolate Bars - 420g

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Why We Love It

Tastes just like chocolate.
Low in sugar.
Eco-conscious and vegan.

Main Highlights

🌱 PROOF IS IN THE TASTING – We have spent years developing a protein bar which tastes just like a chocolate bar. Find out for yourself what all the fuss is about.
🍬 LOW SUGAR, 99 CALORIES - We take pride in offering products that are both low in sugar and low in calories, allowing you to enjoy a healthier option without sacrificing flavour.
🌾 GLUTEN & DAIRY FREE - Crafted in a gluten and dairy free facility, YuBi Bars are made for everyone.
😍 DELICIOUS FLAVOUR – With four delicious flavours to chose from, you will be sure to find your favourite in no time.
💚 VEGAN, RAINFOREST ALLIANCE CHOCOLATE - Manufactured in a vegan facility, YuBi Bars are enrobed in rich Rainforest Alliance Chocolate, ensuring a delightful and eco-conscious treat for all chocolate enthusiasts.
🌸 SUITABLE FOR MULTIPLE DIETARY REQUIREMENTS - All our bars are suitable for individuals following vegan, diabetic and coeliac diets, offering a delicious and inclusive option for a variety of dietary preferences and restrictions.
🌍 COMMITMENT TO SUSTAINABILITY - Made in the UK with 100% plant-based ingredients and packaged responsibly in recyclable FSC cardboard packaging, we are always looking for innovative ways to improve our carbon footprint.

8.8

Excellent

We scanned 911 products

We reviewed these offers relevant to the Kids 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 Fulfil, Grenade, TRIBE, N'eat, N!CK'S, Mars, Snickers, Nakd, Yubi Bar, all of which have a reputation for consistently delivering high-quality products that users love and innovative approaches for function & design.

For the best Kids Protein Bars in the market, we considered we took a deep dive into 4556 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) — White Chocolate Peanut and 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 Balanced nutrition meets delightful taste, Enriched with essential vitamins, Ideal for everyday adventures.
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 Kids Protein Bars and the best cost-to-value ratio is Grenade High Protein, Low Sugar Bar - White Chocolate Cookie, 12 x 60 g (Packaging May Vary)at Grenade with a 26% discount.
Our list of the best Kids 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 Kids Protein Bars in The UK

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We scanned 911 products

We concluded that: