10 Best Protein Meal Replacement Bars in The UK

Last updated on 13/08/2025

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

Why We Love It

High protein, low sugar snack.
Packed with 9 essential vitamins.
Decadent, delicious, and nutritious.

Main Highlights

HIGH PROTEIN and LOW SUGAR BARS: Each 55g bar contains 20g of protein, less than 3 grams of sugar and only 205 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 Peanut and Caramel Flavour features decadent milk chocolate that 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

SlimFast Tasty Balanced Meal Bar, Low Calorie Replacement Bars for Weight Loss and Diet, High Protein, Healthy Snacks for Adults with 23 Vitamins and Minerals, Rocky Road Flavour, Multipack, 16 x 60 g

Why We Love It

Promotes weight loss effectively.
Packed with multivitamins and minerals.
Tantalizing range of flavors.

Main Highlights

NEVER RUN ON EMPTY: SlimFast low-calorie snacks are ready-to-eat high protein meal replacement bars that support your weight loss and help to keep it off*: 14-15 g of protein and less than 230 kcal per bar
MULTIVITAMIN AND MINERAL POWERHOUSE: protein snacks with 23 vitamins and minerals (incl. Vitamin A, Vitamin D, Vitamin C, Vitamin B6, Vitamin B12, magnesium and zinc) per meal replacement bar
IRRESISTIBLE FLAVOURS: ready-to-eat meal replacement bars for weight loss come in 4 delish flavours (Choc Chip, Rocky Road, Choc Orange and Very Berry), no artificial colour, flavours or preservatives
SATISFY HUNGER: Enjoy two SlimFast meal replacement bars a day as part of our 3.2.1 plan to help you lose weight and keep it off, or enjoy it as part of your balanced diet
Substituting two main daily meals with meal replacements contributes to weight loss, and substituting one contributes to weight maintenance. Source: COMMISSION REGULATION (EU) No 432/2012 of 16 May 2012

HUEL Complete Nutrition Bars - 51g Bars - Pick any 10-5 Flavours to choose from - Choc Chip Cookie Dough, Dark Chocolate & Raspberry, Chocolate Fudge Brownie, Peanut Caramel and Chocolate Caramel

Why We Love It

Customizable flavour selection available.
Packed with essential nutrients.
Convenient for on-the-go snacking.

Main Highlights

Pick Any 10 flavours of your choice, in this customised assorted pack!
Complete Nutrition in Every Bite: Each HUEL Complete Nutrition Bar is packed with 26 essential vitamins and minerals, high in protein and fiber to support your daily health needs.
Low Sugar, High Protein: With under 200 kcal per bar, enjoy a guilt-free snack that's low in sugar and packed ith protein to keep you fuller for longer.
Deliciously Layered Flavours: Indulgent vegan chocolate, smooth caramel, and five irresistible flavours—Chocolate Chip Cookie Dough, Dark Chocolate & Raspberry, Chocolate Fudge Brownie, Peanut Caramel, and Chocolate Caramel.
On-the-Go Convenience: Perfect for busy lifestyles, these bars are easy to take anywhere for a quick and balanced nutritional boost.
Vegan & Gluten-Free: Made with high-quality, real ingredients that are 100% vegan and gluten-free, ideal for various dietary preferences.

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

SlimFast 7-Day Taster Kit – 7 Meal Replacement Bars & 7 Ready-to-Drink Shakes, High Protein, High Fibre, 27 Vitamins & Minerals, 7-Day Meal Planner, Low-Calorie Snacks for Weight Management

4% OffFree Shipping

Why We Love It

Balanced nutrition aids weight loss.
Convenient meal planning included.
Tasty flavors keep you satisfied.

Main Highlights

BALANCED NUTRITION – Each item in the SlimFast 7-Day Starter Kit offers high protein, high fibre, and 27 vitamins & minerals to support your weight management journey
7-DAY MEAL PLANNER AND TIPS – Includes an easy-to-follow 7-day meal planner with creative meal ideas, healthy snack suggestions, and expert tips to support your SlimFast diet and weight loss goals
WHAT’S INSIDE THE KIT – 7 ready-to-drink shakes (2 Chocolate, 2 Strawberry, 2 Café Latte, 1 Vanilla) and 7 meal replacement bars (3 Salted Caramel, 2 Chocolate Fudge, 2 Dark Chocolate and Cranberry)
LOW-CALORIE SNACK BOX – Stay on track with calorie-controlled meals and high-protein snacks designed to fit into your busy lifestyle, whether at work, the gym, or while travelling
EASY WEIGHT LOSS PLAN – Follow the SlimFast Plan: 3 SlimFast snacks a day, 1 meal bar, 1 diet shake, a healthy meal, and at least 2 litres of water to stay on track
*Substituting two main daily meals with meal replacements contributes to weight loss, and substituting one – contributes to weight maintenance. Source: COMMISSION REGULATION (EU) No 432/2012 of 16 May 2012

Warrior Raw Protein Bars – 12 x 75g Oat Bar Flapjacks – High Fibre, Low Sugar – Ideal Meal Replacement or Healthy Nutrition Energy Snacks – HFSS/GMP Certified – UK Made (Variety Box)

6% OffFree Shipping

Why We Love It

Packed with 20g protein.
Low sugar, high fibre.
Incredible taste satisfaction.

Main Highlights

HUGE 20 GRAMS OF PROTEIN PER BAR - That's more than 3 whole eggs Our bars are packed with high-quality milk protein to help muscles rebuild and recover after training and to help you meet your daily protein intake.
LOW IN SUGAR, HIGH IN FIBRE - With only 3.5g sugar per bar, these are some of the lowest sugar protein chewy granola bars ever released Also high in fibre to help control blood sugar levels.
USE PRE OR POST WORKOUT - Eat pre-workout for an energy boost or post-workout to help aid recovery. Ideal for cutting or bulking when counting your macros.
GREAT TASTE - Chewy granola oat bar that can be eaten as a filling snack to help keep you satisfied until your next meal and curb cravings for high-sugar snacks.
PACK OF 12 x PROTEIN BARS - Save money with this multipack of 12 high-protein bars. Store at home to eat as and when needed. Can be used as part of a healthy diet to help manage weight gain.

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

Optimum Nutrition Whipped Protein Bars, Low Calorie Snacks, Low Carb Low Sugar, Workout Snack for Men and Women, Chocolate Caramel Flavour, 10 x 60g

21% OffFree Shipping

Why We Love It

High protein, great taste.
Contains naturally occurring sugars.
Boosts workout, 100% vegetarian.

Main Highlights

ON Whipped Protein Bars offer the perfect balance between high protein and great taste
ON energy bars are protein snacks packed with 20 g of protein
Free from palm oil, low sugar protein bars: 100% vegetarian ingredients contain only naturally occurring sugars
High in fibre, healthy protein snacks to be enjoyed on the go, as a post-workout and pre-workout snack for men and women
* Source: COMMISSION REGULATION (EU) No 432/2012 of 16 May 2012

Yubi Mix 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 like a chocolate bar.
Only 99 calories per serving.
Vegan and gluten-free.

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.

Grenade OREO White Protein Bar - High Protein, Low Sugar, 12 x 60 g

44% OffFree Shipping

Why We Love It

High protein, low sugar content.
Authentic Oreo Vanilla flavoring.
Certified for athletes, military personnel.

Main Highlights

HIGH PROTEIN: Packed with protein, with over 20 g per bar
LOW SUGAR: Low in sugar, with less than 2 g per bar
GUILT FREE TREAT: Each triple-layered bar consists of genuine OREO Vanilla, a protein nougat loaded with authentic OREO cocoa, topped with low sugar white chocolate, and topped with zero sugar OREO Pieces
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

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We scanned 1777 products

We reviewed these offers relevant to the Protein Meal Replacement 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, SlimFast, Huel, FitnesSHOCK, Warrior, Nakd, Optimum Nutrition, Yubi Bar, Grenade, 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 Meal Replacement Bars in the market, we considered we took a deep dive into 8886 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 Peanut & 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, Decadent, delicious, and nutritious.
The best value product for most shoppers and where user satisfaction is continuously the highest is SlimFast Tasty Balanced Meal Bar, Low Calorie Replacement Bars for Weight Loss and Diet, High Protein, Healthy Snacks for Adults with 23 Vitamins and Minerals, Rocky Road Flavour, Multipack, 16 x 60 g by SlimFast based on online reviews by bloggers, experts and online shoppers.
The biggest bargain at the moment for Protein Meal Replacement Bars and the best cost-to-value ratio is Grenade OREO White Protein Bar - High Protein, Low Sugar, 12 x 60 gat Grenade with a 44% discount.
Our list of the best Protein Meal Replacement 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 Protein Meal Replacement Bars in The UK

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Warrior Creatine Protein Bars – Low Carb Snack, Oat Based Flapjack Bar, Increase Physical Performance, 12 x 75g (Chocolate Peanut)

Nature Valley Protein Peanut & Chocolate Gluten Free Cereal Bars, 40 g (Pack of 26 )

SlimFast Ready To Drink Shake, Meal Replacement Shakes for Weight Loss and Balanced Diet, High Protein, Vitamins and Minerals, No Added Sugar, Raspberry and White Chocolate Flavour, 6 x 325 ml

SlimFast Meal Replacement Shake for Weight Loss & Balanced Diet, Vitamins and Minerals, Low Calorie, High Protein, Banana Flavour, 8 servings, 292 g, Packaging May Vary

Power Barr Protein Plus Fibre Raspberry Yoghurt 16x35g - High Fibre Low Sugar Bar

We scanned 1777 products

We concluded that: