10 Best Bulk Protein Bars in The UK

Last updated on 05/07/2025

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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

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.

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

Mars Chocolate & Caramel Protein Bar Bulk Box, 18 x 50g

Why We Love It

Coated in rich milk chocolate.
Vegetarian friendly protein snack.
Perfect for sharing moments.

Main Highlights

Protein bar with a caramel and fluffy nougat centre coated in milk chocolate
30 percent less sugar
Enjoy on the go or with friends and family
Vegetarian friendly
18 chocolate protein bars of 50g

High protein for muscle growth.
Soft-baked with rich flavor.
Low sugar for guilt-free snacking.

Main Highlights

Our legendary protein bar gives you gains when you're on the go; High in protein which contributes to the growth of muscle mass
Powered by 20 g protein and 6.7 g fibre per bar
Our bar is soft-baked and triple-layered to create a rich, creamy taste
Low in sugar, it's perfect for snacking between meals
Available in a range of delicious flavours, this tasty treat is a step towards your protein goals

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

4% OffFree Shipping

Why We Love It

Ideal for on-the-go snacks.
High in protein and fibre.
No artificial flavours or preservatives.

Main Highlights

Nature Valley Protein Cereal Bars contain 10g of protein and are high in fibre
Nature Valley Protein Cereal Bars are the perfect on the go gluten free snack for any time of day
Why not also try Nature Valley Crunchy Oats & Dark Chocolate Cereal Bars or Nature Valley Nut Butter Peanut Biscuits?
Packaging may vary

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

29% Off

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

Snickers Chocolate Protein Bars, Peanut Butter, Caramel & Milk Chocolate Bulk Box, 18 x 47g, Ideal for Gift, Snacks or Hamper

24% Off

Why We Love It

Balanced blend of flavors.
Perfect protein-packed snack.
Satisfying post-workout treat.

Main Highlights

Creamy peanut butter and rich caramel. All wrapped in delicious Snickers milk chocolate. Now with 10g of whey protein, and 30% less sugar than classic Snickers
Active lifestyle? You need a high protein chocolate bar. Reach for Snickers Protein whether you’re halfway up a mountain or at half-time during your weekly five-a-side match
You want maximum high protein satisfaction after you’ve hit your PB. When you’ve put the effort in, you deserve a Snickers peanut butter protein bars as a reward and with this Chocolate Bulk box you won't run out in a hurry.
Vegetarian friendly chocolate caramel and peanut butter bars that are free from artificial colours, flavours and preservatives
Chocolate Bulk box of 18 Snickers Protein bars with peanut butter & chocolate, each bar 47g.

Bulk Gourmet Vegan Protein Bar, Plant Based, Dark Chocolate Salted Caramel, Pack of 12, 12 Servings, Packaging May Vary

Free Shipping

Why We Love It

Packed with impactful plant protein.
Rich, creamy, triple-layered taste.
Perfect training partner anytime.

Main Highlights

A premium bar that's packed with protein and made with plants
Powered by 14 g protein per bar
Triple layered to deliver a rich, creamy taste
Ideal for a protein-fuelled snack at any time of day
Available in a range of delicious flavours, this is your perfect training partner

Bodybuilding Warehouse

BW Premium LUX 20g High Protein Flapjack Bars 24 x 75g - Oat Based Low Sugar Snack - Bodybuilding Warehouse (White Choc Raspberry)

9% OffFree Shipping

Why We Love It

High protein content keeps you full.
Low sugar for guilt-free snacking.
Delicious flavors for every preference.

Main Highlights

LUX PROTEIN FLAPJACK - These snack bars contain 20g of protein, very low sugar and high fibre. Protein keeps you full for longer, boosts energy and mood and is helpful for muscle building and repair. Perfect at any time of the day. Great for when you're on the go.
BENEFITS - Great choice for a snack or dessert. Ideally Incorporating complex carbohydrates in combination with protein into your post-workout routine can assist with muscle growth and recovery.
OAT-BASED BARS - A great source of complex carbohydrates. They provide slow-release and sustainable energy. This is great if you’re trying to control your calorie intake.
FLAVOURS - Available in 5 delicious flavours and 2 sizes (12 & 24 packs): Birthday Cake, Blueberry Yogurt, Chocolate Chunk, Mint Chocolate Chunk & Chocolate Orange. Suitable for vegetarians.
SERVING SIZE - 1 Bar (75g) - That’s 20g of protein per bar!

Giant Bars Flapjack Mix Berry (Pack of 20) - Vegetarian Oat Bars, Snack Bars, Flapjack Bars UK | Flapjacks Bulk Flapjacks Multipack | Healthy Snack Bars & Fruit Bars | Snack Bars Bulk Protein Snacks

Why We Love It

Nutritious and delicious snack.
Perfect for active lifestyle.
Free from artificial preservatives.

Main Highlights

✅ Nutritious & Delicious Berry Blend: Enjoy the wholesome goodness of our Giant Flapjack Bars Mix Berry, a pack of 20 scrumptious vegetarian oat bars. Packed with the natural sweetness of mixed berries, these bars are perfect for anyone seeking a healthy, yet tasty snack option. The combination of juicy berries with hearty oats offers a delightful taste and texture, making them ideal for on-the-go snacking or a nutritious treat at home.
✅ Vegetarian Friendly-Snacking: Embrace a healthier lifestyle with our vegetarian flapjack bars. Made with high-quality, plant-based ingredients, these bars are suitable for vegetarians and anyone looking for a dairy-free and egg-free snack option. Indulge in the guilt-free pleasure of a delicious snack that aligns with your dietary preferences and ethical choices.
✅ Energizing Oat Bars for Active Lifestyle: Whether you're a fitness enthusiast, a busy professional, or a student, our flapjack bars are designed to provide you with sustained energy. Rich in fiber and nutrients, these oat bars are an excellent source of slow-releasing energy, helping you stay fueled and focused throughout your day.
✅ Convenient & Versatile Snack: Each flapjack bar in this bulk pack of 20 is individually wrapped, making them perfect for on-the-go snacking. Toss them in your gym bag, backpack, or desk drawer for a quick and easy snack that's ready whenever you are. Ideal for picnics, road trips, or as a tasty addition to lunchboxes.
✅ Snack with Confidence: Our Giant Flapjack Bars Mix Berry are more than just a tasty treat; they're a smart snack choice. Free from artificial colors, flavors, and preservatives, these bars are a wholesome alternative to traditional snacks. Enjoy the confidence of feeding your family a snack that's both delicious and nutritious, perfect for all ages.

8.7

Excellent

We scanned 899 products

We reviewed these offers relevant to the Bulk 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 Mars, Fulfil, Bulk, Nature Valley, Grenade, Snickers, Bodybuilding Warehouse, CR Snacking, all of which have a reputation for consistently delivering high-quality products that users love and innovative approaches for function & design.

For the best Bulk Protein Bars in the market, we considered we took a deep dive into 4496 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 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. We love many things about this product by Mars. What sets it apart from the competition is Delicious Mars chocolate flavor, Low sugar, high protein, Perfect post workout snack.
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 Bulk Protein Bars and the best cost-to-value ratio is Grenade High Protein, Low Sugar Bar - Chocolate Chip Cookie Dough, 12 x 60 g (Packaging May Vary)at Grenade with a 29% discount.
Our list of the best Bulk 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 Bulk Protein Bars in The UK

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We scanned 899 products

We concluded that: