We Chose The Best Protein Bars in The UK - 10/2025

SCI-MX High Protein Chocolate Chip Brownie Box - 20g protein, 0.5g sugar + 246 calories per brownie - Pack of 12 x 65 g - Low Sugar - Pre / Post Workout Snack - No Palm Oil - Suitable for Vegetarians

SCI-MX High Protein Chocolate Chip Brownie Box - 20g protein, 0.5g sugar + 246 calories per brownie - Pack of 12 x 65 g - Low Sugar - Pre / Post Workout Snack - No Palm Oil - Suitable for Vegetarians

SCI-MX

3% OffFree Shipping

Why we love it

Rich taste with high protein.
Convenient and nutritious snack.
Supports active and sporty lifestyles.

Main Highlights

🍫 WHAT’S IN THIS HIGH PROTEIN CHOCOLATE CHIP BROWNIE: Our brownie tastes velvety and rich, as you’d expect from a regular brownie to! With a mere 0.5g sugar and a whopping 20g protein per brownie, this snack is your go-to guilt-free snack. There’s only 24g of carbs primarily from low GI oat flour. As for fibre, there’s 3.3g in this delicious bar which can help make you feel fuller, so you won’t want to snack on anything else! There’s no palm oil, we’ve chosen coconut oil instead.
🏋️‍♂️ BENEFITS: Eating a high protein, healthy diet is tough at the best of times, so having a nutritious alternative to carry around with you is a real treat, this time in the form of our soft-baked, smooth, chocolate chip brownie baked to perfection, we challenge you to only eat one. Our indulgent, high-protein brownies are a must for any chocoholic and are individually baked. This brownie is free from artificial colours, aspartame, preservatives and palm oil.
🏃 HOW & WHEN TO USE: If you're looking to get some top-quality protein while dropping some carbs, sink your teeth into this brownie - it's a delicious, convenient way of packing in some fibre and protein to help you feel fuller for longer. Each brownie is conveniently foil wrapped so you can carry them around with you. Enjoy with a cup of tea on the sofa, as an on-the-go snack or post-workout, designed to support your physically active lifestyle.
💚 POWERING EVERY GOAL: Whether you want to build muscle, bulk, reduce body fat or peak your performance, our core focus is on high-protein nutrition. Healthy, balanced, low in sugar, low in saturated fats. Our sports nutrition products are made to complement all types of training and performance goals – whether you’re a casual gym goer, an athlete or sportsperson.
⭐ WHY SCI-MX: Our goal is to help nurture, support, and inspire the sportsperson in all of us. From recovery to competition training, there’s a SCI-MX product to help you achieve your goal. From high-quality protein powders, pre-workout and post-workout blends like creatine monohydrate to high-protein snacks such as flapjack bars, we've got you covered. Our no-nonsense approach to sports nutrition supplements guarantees you’ll always receive premium quality, great value products.

8.9

Excellent

8.9

Excellent

SCI-MX

SCI-MX High Protein Chocolate Chip Brownie Box - 20g protein, 0.5g sugar + 246 calories per brownie - Pack of 12 x 65 g - Low Sugar - Pre / Post Workout Snack - No Palm Oil - Suitable for Vegetarians

3% OffFree Shipping

Why we love it

Rich taste with high protein.
Convenient and nutritious snack.
Supports active and sporty lifestyles.

Main Highlights

🍫 WHAT’S IN THIS HIGH PROTEIN CHOCOLATE CHIP BROWNIE: Our brownie tastes velvety and rich, as you’d expect from a regular brownie to! With a mere 0.5g sugar and a whopping 20g protein per brownie, this snack is your go-to guilt-free snack. There’s only 24g of carbs primarily from low GI oat flour. As for fibre, there’s 3.3g in this delicious bar which can help make you feel fuller, so you won’t want to snack on anything else! There’s no palm oil, we’ve chosen coconut oil instead.
🏋️‍♂️ BENEFITS: Eating a high protein, healthy diet is tough at the best of times, so having a nutritious alternative to carry around with you is a real treat, this time in the form of our soft-baked, smooth, chocolate chip brownie baked to perfection, we challenge you to only eat one. Our indulgent, high-protein brownies are a must for any chocoholic and are individually baked. This brownie is free from artificial colours, aspartame, preservatives and palm oil.
🏃 HOW & WHEN TO USE: If you're looking to get some top-quality protein while dropping some carbs, sink your teeth into this brownie - it's a delicious, convenient way of packing in some fibre and protein to help you feel fuller for longer. Each brownie is conveniently foil wrapped so you can carry them around with you. Enjoy with a cup of tea on the sofa, as an on-the-go snack or post-workout, designed to support your physically active lifestyle.
💚 POWERING EVERY GOAL: Whether you want to build muscle, bulk, reduce body fat or peak your performance, our core focus is on high-protein nutrition. Healthy, balanced, low in sugar, low in saturated fats. Our sports nutrition products are made to complement all types of training and performance goals – whether you’re a casual gym goer, an athlete or sportsperson.
⭐ WHY SCI-MX: Our goal is to help nurture, support, and inspire the sportsperson in all of us. From recovery to competition training, there’s a SCI-MX product to help you achieve your goal. From high-quality protein powders, pre-workout and post-workout blends like creatine monohydrate to high-protein snacks such as flapjack bars, we've got you covered. Our no-nonsense approach to sports nutrition supplements guarantees you’ll always receive premium quality, great value products.

We scanned 1690 products

We reviewed these offers relevant to the 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, BAREBELLS, Warrior, Grenade, Nature Valley, Snickers, Mars, SCI-MX, Bounty, 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 Bars 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 Barebells Soft Protein Bars | 16g protein Healthy Snacks, Protein Snacks for Breakfast, Sugar Free Chocolate, Low Carb – 12 x 55g (Peanut Caramel) by BAREBELLS based on online reviews by bloggers, experts and online shoppers.

The biggest bargain at the moment for Protein Bars and the best cost-to-value ratio is Grenade OREO Protein Bar - High Protein, Low Sugar, 12 x 60 gat Grenade with a 41% discount.

Our list of the best 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.

Best Protein Bars of 2025

We scanned 1690 products

We concluded that: