Protein Bars
CNP ProDough Protein Bar 12x60g
Original price was: £27.99.£21.99Current price is: £21.99.
Huel Complete Protein Bars 12x51g
Original price was: £25.99.£23.99Current price is: £23.99.
Protein Bars UK: Everything You Need to Know
Looking for the best protein bars in the UK this year? You’re in the right place.
Our ultimate 2025 guide to protein bars is your go-to resource for discovering the top-rated bars that fuel muscle growth, support recovery, and fit seamlessly into your fitness routine. Whether you’re training hard in the gym or just need a convenient, high-protein snack for busy days, we’ve got you covered.
Protein bars are more than just a quick bite—they’re an essential tool for anyone serious about hitting their daily protein goals, boosting performance, and staying on track with health and fitness. But with countless options on the shelves, how do you find one that actually delivers on nutrition, taste, and value?
That’s where we come in. We’ve tested the UK’s most popular protein bar brands—including favourites like Grenade, Huel, Mars, and Snickers, as well as standout newcomers like Muscle Moose—to bring you a carefully selected list of the best bars for every goal, from muscle gain to weight loss.
What You’ll Get in This Guide:
Honest, expert reviews of the top protein bars
The best picks for taste, value, high protein content, and more
Advice on how to choose a protein bar that fits your fitness goals
Whether you’re bulking, cutting, or just trying to eat smarter, this guide will help you pick the right protein bar for your needs.
Quick Look: Best Protein Bars Uk
For a rapid overview of our top picks, here’s a quick look at the best protein bars in various categories:
Best Overall Protein Bar:
Huel Bars – Exceptional balance of ingredients and performance for everyday use.Best High Protein Bar:
Per4m Bars – Packed with protein to support intense muscle repair and recovery.Best Protein Bar for Muscle Gain:
Huel Bars – Designed to deliver the ideal nutrient breakdown to maximise muscle growth.Best Value Bars:
Muscle Moose Dinky Bars – Great performance at an affordable price point.Best Tasting Protein Bars:
Snickers Bars – Enjoy mouthwatering flavours coupled with the protein you need.Best Weight Loss/Diet Bar:
Applied Nutrition Diet Bars – Perfect for those looking to manage their calorie intake while still enjoying a nutritious snack.
Integrate these options into your daily routine to meet your fitness and muscle gain goals with ease. Find the perfect protein bar that aligns with your taste, budget, and nutritional needs.
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Best Protein Bar Picks for Muscle Gain Uk 2025: quick reviews
Here’s a selection of protein bars we recommend to help with a muscle building diet. These bars offer a variety of flavours and are crafted with quality ingredients:
- Grenade Protein Bars Review:
- Known for their delicious flavors and high-quality protein content.
- Pros: High protein, low carb, exceptional taste.
- Ideal for: Muscle gain and post-workout recovery.
- Snickers Low Sugar Protein Bars Review:
- A healthier alternative to the classic Snickers bar with reduced sugar and added protein.
- Pros: Classic taste, high protein, low sugar.
- Ideal for: On-the-go snacking and muscle gain.
- Cnp ProDoug Bars Review:
- Great flavors, quality ingredients, and high in protein.
- Pros: High-quality protein, indulgent flavors, low sugar caramel filling.
- Ideal for: Muscle gain and satisfying sweet cravings healthily.
- Mars High Protein Bars Review:
- Enjoy the classic Mars taste with added protein for muscle recovery.
- Pros: Familiar taste, high protein.
- Ideal for: Post-workout recovery and muscle gain.
- Per4m Protein Bars Review:
An ideal blend of taste and performance, Per4m Protein Bars are crafted to deliver high-quality protein with minimal sugar
- Pros: 20g high-quality protein, low sugar, indulgent flavors like cookie dough and chocolate brownie.
Ideal for: Post-workout recovery, lean muscle gain, and satisfying sweet cravings without excess sugar.
- Muscle Moose Dinky Bars Review:
- A unique twist on protein bars with there size, these are a tasty way to increase your protein intake.
- Pros: High protein, great flavours.
- Ideal for: On-the-go snacking and muscle gain.
- Huel Bars Review:
- A full nutrient protein bar to help build muscle.
- Pros: High protein, low sugar, vegan.
- Ideal for: Muscle gain and overall health.
How to Pick a Protein Bar for Muscle Gain
Selecting the right protein bar can play a pivotal role in your muscle repair and growth. Here are the key nutritional components to consider:
Protein Content
- Aim for 10-25 grams per serving:
A sufficient protein punch is essential for muscle repair and post-workout recovery.
Carbohydrate Content
- Tailor to your goals:
- For muscle gain or effective post-workout recovery, opt for bars with 5-10 grams of carbs per serving.
- Lower-carb options can also benefit those focusing on weight management while still providing energy.
Fat Content
- Focus on healthy fats:
- Look for bars that include beneficial unsaturated fats.
- Steer clear of high saturated or trans fats, especially if weight loss is a priority.
By keeping these factors in mind, you can choose a protein bar that not only fuels your muscles but also aligns with your overall dietary goals. Always read labels and compare nutritional content to find the best fit for your muscle gain.
Best Protein Bars Uk 2025: top choices & Reviews
Huel Bars: Review
Huel Bars are the smart, clean, and nutritionally complete snack solution for anyone looking to fuel up without compromising on health. Whether you’re chasing fitness goals or just need a balanced snack on-the-go, these bars deliver a powerful blend of plant-based protein, essential vitamins, and indulgent flavour—all under 200 calories.
Why Choose Huel Bars?
13g of Plant-Based Protein
Each Huel Bar packs 13g of high-quality protein, making it the ideal post-workout snack or midday pick-me-up. The protein supports muscle recovery, repair, and maintenance—especially important for active lifestyles.
Low in Sugar, Big on Flavour
With minimal sugar and no artificial sweeteners, Huel Bars satisfy your sweet cravings without spiking blood sugar or wrecking your diet. It’s guilt-free indulgence you can feel good about.
Fewer Than 200 Calories Per Bar
Perfect for anyone managing their calorie intake, Huel Bars are light on calories but heavy on satisfaction—making them a smart snack between meals or after training.
170 Health Benefits in Every Bite
Formulated with 26 essential vitamins and minerals, each bar contributes to over 170 potential health benefits. From boosting energy to supporting immune function, Huel Bars are more than just a protein snack—they’re full-body fuel.
Delicious Vegan Chocolate Flavour
Enjoy the rich, indulgent taste of vegan chocolate while making a choice that supports your body and the planet. Huel Bars combine great flavour with clean, sustainable ingredients.
High Fibre, Low Salt
With a generous dose of fibre, these bars help support digestion and keep you fuller for longer—while the low-sodium content ensures your snack stays heart-healthy and balanced.
Ideal For:
Post-Workout Refuelling – Plant-based protein to aid recovery and muscle maintenance.
Healthy Snacking – A low-calorie, low-sugar treat that satisfies without the crash.
Everyday Nutrition – Packed with vitamins, minerals, and fibre to support total body wellness.
Vegan-Friendly Fuel – 100% plant-based ingredients with a delicious chocolatey twist.
Suggested Use:
Enjoy your Huel Bar as a smart snack between meals, before the gym, or after a workout. It’s the perfect choice when you want clean, complete nutrition in a convenient and tasty format.
Snickers Low Sugar Protein Bar: Review
Enjoy the legendary taste of Snickers—without the sugar overload. The Snickers Low Sugar Protein Bar delivers all the indulgence of your favourite chocolate bar, now reimagined as a high-protein, fitness-friendly snack. Packed with protein, low in sugar, and bursting with flavour, it’s a perfect option for anyone who wants a treat that works with their health and fitness goals.
Why Choose Snickers Low Sugar Protein Bar?
20g of Protein, Just 2g of Sugar
Fuel your recovery or satisfy hunger with 20g of quality protein per bar—ideal for muscle repair and satiety. With just 2g of sugar, it’s a guilt-free indulgence that keeps your macros in check.
Authentic Snickers Taste
Enjoy everything you love about a classic Snickers: creamy caramel, chewy nougat, crunchy peanuts, and rich milk chocolate—all with a healthier twist. It’s the ultimate treat for chocolate lovers with fitness goals.
Convenient, On-the-Go Nutrition
Perfect for busy lifestyles, this bar makes a great snack between meals, before the gym, or post-workout. Just toss one in your gym bag or desk drawer for a protein hit whenever you need it.
Sensible Calorie Count
At only 232 calories, the Snickers Low Sugar Protein Bar gives you all the flavour and satisfaction without blowing your daily intake. Ideal for anyone watching their weight or trying to balance taste with performance.
Ideal For:
Post-Workout Recovery – High protein to support muscle rebuilding after training.
Guilt-Free Snacking – Classic candy bar taste without the high sugar content.
On-the-Go Fuel – Portable and mess-free, perfect for busy days or gym sessions.
Sweet Cravings Control – A delicious way to beat cravings while staying on track with your goals.
Suggested Use:
Enjoy the Snickers Low Sugar Protein Bar any time of day—after workouts, between meals, or as an evening treat. It’s a smart, satisfying choice that blends indulgence with performance.
Per4m Protein Bars: Review
Looking for a protein bar that delivers both flavour and function? Per4m Protein Bars are your new go-to snack. With their rich, indulgent taste and impressive nutritional profile, they’re the perfect balance between a satisfying treat and serious muscle support—ideal for athletes, gym-goers, or anyone needing a nutritious protein hit on the move.
Why Choose Per4m Protein Bars?
20g of Premium Protein Per Bar
Each Per4m bar is loaded with 20g of high-quality protein from a balanced blend of milk proteins, soy protein isolate, and hydrolysed collagen. This protein combination fuels muscle recovery and lean growth, making it an excellent post-workout snack or between-meal boost.
Low in Sugar, Big on Taste
With less than 2g of sugar per serving, you can enjoy Per4m Bars without worrying about sugar crashes or unwanted calories. It’s guilt-free indulgence at its finest.
Mouth-Watering Flavours & Texture
These bars don’t just perform—they taste amazing. Whether you crave Chocolate Brownie, Cookie Dough, or Salted Caramel, each bar offers a soft, chewy texture and a rich flavour that rivals your favourite desserts.
Smart Nutritional Formula
From its low sugar caramel layer to the added sea salt and roasted peanuts, every ingredient in Per4m Protein Bars is chosen to create a satisfying, protein-packed experience. Sweeteners like maltitol and oligofructose offer reduced sugar impact, while healthy fats and fibre help keep you full and energised.
Ideal For:
Muscle Recovery & Growth – The 20g protein content supports post-exercise repair and lean muscle development.
Weight Management – A low-sugar option for those watching calorie intake or following a lean bulk.
Busy Lifestyles – Convenient, portable, and satisfying—perfect for work, the gym, or on-the-go snacking.
Suggested Use:
Enjoy a Per4m Protein Bar post-workout, between meals, or anytime you need a protein-rich snack. Whether you’re training hard or need a quick energy boost, Per4m delivers taste and nutrition without compromise.
Grenade Protein Bar: Review
Packed with protein, low in sugar, and outrageously tasty—Grenade Protein Bars are one of the UK’s most popular choices for fitness-focused snacking. Whether you’re looking for post-workout fuel, a high-protein treat, or a guilt-free alternative to chocolate, Grenade bars deliver bold flavour and serious results.
Why Choose Grenade Protein Bars?
High Protein Content (20g+)
Each bar contains over 20 grams of high-quality protein, making it a powerhouse snack for muscle recovery, lean mass support, or simply keeping hunger at bay. Ideal after the gym or as part of your daily protein intake.
Low in Sugar
Grenade Bars are renowned for their low sugar content—typically under 2g per bar. You get the rich, indulgent taste of a chocolate bar without the sugar crash, helping you stay on track with your fitness and nutrition goals.
Incredible Flavours & Texture
From fan-favourites like Carb Killa White Chocolate Salted Peanut to Birthday Cake and Fudge Brownie, Grenade doesn’t compromise on flavour. With layers of gooey caramel, crunchy protein crispies, and smooth chocolate, every bite feels like a treat.
Balanced Nutrition
Each bar provides a well-rounded macro profile: high protein, low sugar, moderate carbs, and around 220–240 calories—perfect for those looking to balance performance and indulgence.
Ideal For:
Post-Workout Recovery – Helps rebuild and maintain muscle after intense training.
On-the-Go Nutrition – Convenient for travel, work, or as a quick protein fix anytime.
Sweet Tooth Satisfaction – Chocolate bar taste with sports nutrition benefits.
Calorie-Conscious Diets – Fulfilling snack with controlled calories and sugar.
Suggested Use:
Enjoy a Grenade Protein Bar after training, between meals, or as a satisfying protein-packed snack. They’re gym-bag friendly, travel-ready, and delicious enough to replace your usual treat.
Whether you’re cutting, bulking, or maintaining, Grenade Bars offer a functional and flavourful snack that fits almost any fitness goal. Loved by athletes and everyday gym-goers alike, it’s easy to see why these bars are a top pick across the UK.
CNP ProDough Protein Bar: Review
CNP ProDough delivers the indulgent taste of a doughnut with the nutritional value of a high-protein snack—perfect for those who want to stay on track without sacrificing flavor. With a rich center, low sugar content, and a generous protein boost, this bar is a game-changer for anyone craving a sweet treat that works for their goals.
Why Choose CNP ProDough Protein Bars?
Doughnut-Inspired Taste
Craving a dessert-style snack? CNP ProDough bars are crafted to replicate the flavor and texture of your favorite doughnut, offering a sweet, decadent bite every time. With soft layers and a creamy filling, they’re the perfect balance between indulgent and nutritious.
High Protein Content (17g)
Each bar packs 17g of high-quality protein from a blend of milk protein, hydrolyzed wheat protein, and soy protein isolate. This combination supports muscle recovery and growth—ideal post-workout or as a protein-rich snack between meals.
Low Sugar, Guilt-Free Indulgence
Enjoy the sweetness of caramel with only a fraction of the sugar you’d expect. These bars feature a low sugar caramel filling, giving you that satisfying taste while helping you stay aligned with your fitness or weight management goals.
Delicious Caramel Chocolate Coating
Wrapped in a smooth caramel chocolate flavor coating, every ProDough bar offers a luxurious mouthfeel and rich flavor to complete the doughnut-style experience. It’s a protein treat that feels like a reward.
Ideal For:
Post-Workout Recovery – Rebuild and refuel with high-quality protein and low sugar.
Craving Control – Beat sugar cravings with a smarter, more nutritious option.
On-the-Go Snacking – A convenient bar for travel, work, or in-between meals.
Dessert Replacement – Enjoy the taste of a doughnut—without the crash.
Suggested Use:
Grab a CNP ProDough Bar whenever you need a quick, tasty boost. Perfect after a workout, between meals, or as a healthier dessert alternative that supports your active lifestyle.
With indulgent flavor and functional benefits, CNP ProDough bars offer a guilt-free way to satisfy your sweet tooth and hit your protein targets—making them a standout in the world of fitness-friendly snacks.
The Big Debate: Are Protein Bars Healthy?
Protein bars have gained popularity as a convenient source of essential nutrients, especially for those with active lifestyles. However, before incorporating them into your diet, it’s important to weigh their health benefits against potential drawbacks. In this guide, we break down both sides of the debate so you can make an informed decision about including protein bars in your nutritional regimen.
Healthy Factors
Convenient Protein Source
Protein bars offer a portable, hassle-free option to meet your daily protein needs. They’re perfect for busy individuals looking to manage hunger between meals or when on the go.
Muscle Recovery and Growth
Protein is crucial for muscle repair and growth. Well-formulated protein bars can serve as effective post-workout snacks, helping to replenish muscle tissues and support your fitness goals.
Enhanced Nutrient Intake
Many protein bars are fortified with vitamins and minerals, delivering additional nutritional benefits beyond just protein. This can be especially beneficial for those with specific dietary requirements or nutritional deficiencies.
Not-So-Healthy Factors
Added Sugars
Some commercial protein bars contain high levels of added sugars to improve flavor. These added sugars can counteract potential health benefits. Check the nutrition labels and choose bars with lower sugar content.
Calorie Density
Protein bars can be calorie-dense. Consuming too many without accounting for your total daily caloric intake may lead to unwanted weight gain, particularly if you are not following a muscle gain diet.
Artificial Ingredients
Certain protein bars include artificial sweeteners, preservatives, and additives to enhance taste and extend shelf life. If you’re aiming for a whole-food, minimally processed diet, be sure to read labels carefully.
Inadequate Nutrient Variety
While protein bars can help fill nutritional gaps, relying solely on them might result in missing out on other essential nutrients provided by a varied, balanced diet.
The Final Take
Protein bars can be a convenient and effective way to supplement your protein intake and aid in muscle recovery—when chosen wisely. Look for bars with balanced macronutrients, minimal added sugars, and natural ingredients. Remember that protein bars should complement a well-rounded diet, not replace whole foods entirely.
Quick Summary
Benefits:
- Convenient Protein Source: Ideal for busy lifestyles and on-the-go snacking.
- Muscle Recovery and Growth: Supports efficient post-workout muscle repair.
- Enhanced Nutrient Intake: Many bars boost your vitamin and mineral intake.
Drawbacks:
- Added Sugars: Opt for bars with minimal added sugars.
- Calorie Density: Consume mindfully to avoid excess caloric intake.
- Artificial Ingredients: Check labels to avoid unwanted additives.
By integrating protein bars thoughtfully into your diet, you can harness their benefits to support your overall health and muscle-building goals while avoiding potential pitfalls.
Frequently asked questions
Ideal for various situations like long drives, pre/post-workout snacks, and busy days.
Yes, they are a convenient way to increase protein intake, especially on a mass-gaining diet.
Yes, they can help control hunger and prevent overeating when integrated into a balanced diet.
Yes, look for plant-based protein bars labeled as vegan or vegetarian-friendly.
They can be a convenient option, but should not replace whole foods entirely.
For skinny guys looking to gain muscle, some of the top mass gainers include Mutant Mass Extreme 2500, Mutant Mass, USN Muscle Fuel Anabolic, USN Hyperbolic Mass, and Optimum Nutrition Serious Mass. Any of these options are great for individuals with fast metabolisms and specific muscle-gaining goals.
For those who struggle significantly with gaining weight, we recommend Mutant Mass Extreme 2500 or USN Hyperbolic Mass. These products are specifically designed for people with fast metabolisms and will effectively support muscle gain.
Overall, all of these mass gainers will help anyone looking to build muscle and achieve their fitness goals.
Typically several months to a year; check the expiration date on the packaging.
Yes, they can be used in various recipes or softened in the microwave for a warm treat.
Some do; opt for bars with natural ingredients if you prefer minimal processing.
Yes, they can support goals like bulking or cutting depending on their nutritional content.
They offer convenience and portability, but whole foods provide a broader range of nutrients.
Yes, consuming them after exercise helps replenish protein stores and aids muscle recovery.
Our top choices of protein bars for muscle gain in the Uk 2025 are Grenade protein bars, CNP Pro Dough Bars, Huel Bars, Snickers Low Sugar bars, Muscle Moose Dinky Bars and CNP Protein Flapjacks.
