10 Best High Protein Flapjack Bars in The UK

Last updated on 26/06/2025

Advertising disclosure

Best Choice

9.8

Exceptional

JB's TREK

JB's TREK High Protein Flapjack Original Oat, Gluten Free, Plant Based, Vegan Snack, 50 g x 36 Bars

Free Shipping

Why We Love It

Plant-based protein, 9g per flapjack.
Rich source of dietary fiber.
Deliciously satisfying oat flavor.

Main Highlights

PROTEIN Flapjacks delivering long lasting energy to keep you going
PLANT-BASED - each flapjack contains 9g of plant-based protein, is a source of fibre and vegan friendly
SOURCE OF FIBRE - Perfect nourishing and filling healthy snack with oats
IDEAL SNACK for active people, sport and fitness fans who are kind to their body
DELICIOUS - humble oatiness with a deep and satisfying taste

JB's TREK High Protein Flapjack Biscoff - Plant Based - Vegan Snack - 50 g x 36 bars

3% OffFree Shipping

Why We Love It

Long lasting energy boost.
Plant-based and vegan friendly.
Delicious Biscoff flavor topping.

Main Highlights

PROTEIN flapjacks delivering long lasting energy to keep you going
PLANT-BASED - each flapjack contains 9g of plant-based protein, is a source of fibre and vegan friendly
SOURCE OF FIBRE - Perfect nourishing and filling healthy snack with oats
IDEAL SNACK for active people, sport and fitness fans who are kind to their body
DELICIOUS - covered with a top layer of Biscoff flavour topping, transforming the humble oatiness into a deep and satisfying taste

Trek Protein Flapjacks Bars 24 x 50g - Mixed Case Variety Pack - Natural Ingredients Snacks, Vegan Protein Bar

Free Shipping

Why We Love It

Delivers long-lasting energy.
Packed with plant-based protein.
Ideal for active individuals.

Main Highlights

PROTEIN Flapjacks delivering long lasting energy to keep you going.
PLANT-BASED - each flapjack contains 9g of plant-based protein, is a source of fibre and vegan friendly.
SOURCE OF FIBRE - Perfect nourishing and filling healthy snack with oats.
IDEAL SNACK for active people, sport and fitness fans who are kind to their body.

Getbuzzing High Protein Nut Free Flapjack- Chocolate Fudge 55g - Healthy Snack Bars - Gym, Running, Cycling - Pure Protein Made in The UK - Pack of 12 Bars

Why We Love It

Boosts performance and endurance.
Packed with 16g protein.
100% natural ingredients used.

Main Highlights

High Protein Content: Each 55g bar delivers a substantial amount of protein to support muscle recovery and growth.
Nut-Free Recipe: Safe for those with nut allergies, ensuring a worry-free snacking experience.
Natural Ingredients: Made with wholesome components like gluten-free oats, honey, and real fruit pieces, free from artificial additives.
Made in the UK: Proudly produced in the United Kingdom, adhering to high-quality standards.

Uncle Jack's Protein Flapjacks 12 x 100g - | 15g Protein | High Protein | 440kcal per bar | Cherry Bakewell

Why We Love It

High protein for energy boost.
Delicious flavours to enjoy.
Convenient 100g flapjack size.

Main Highlights

Uncle Jack Protein Flapjacks come in 12x100g per box
15g of Protein per flapjack
Comes in several delicious flavours including Carrot Cake, Cherry Bakewell, Choc Peanut Butter and Yoghurt Muesli

Uncle Jack's Protein Flapjacks 12 x 100g - | 15g Protein | High Protein | 440kcal per bar | Peanut Butter Choc

Why We Love It

High protein for energy.
Tasty flavor variety available.
Convenient on-the-go snack.

Main Highlights

Uncle Jack Protein Flapjacks come in 12x100g per box
15g of Protein per flapjack
Comes in several delicious flavours including Carrot Cake, Cherry Bakewell, Choc Peanut Butter and Yoghurt Muesli

Olyke Peanut Butter Oat Flapjacks 95g (Box of 24)

Free Shipping

Why We Love It

Handmade perfect oaty treat.
Source of fibre and protein.
Suitable for Vegetarians.

Main Highlights

👍 Handmade perfect oaty treat to be enjoyed any time of the day
😍 A source of fibre and protein
❤️ Suitable for Vegetarians
👪 Perfect for children snack, pre workout energy or on-the-go breakfast
✅ Different flavours are also available

Warrior Raw Protein Flapjacks – 20g Protein Per Bar – Low Sugar, High Fibre Snack – Pre & Post Workout – Chocolate Brownie Flavor – 12 x 75g Bars – Muscle Recovery & Meal Replacement

Why We Love It

High protein for muscle recovery.
Low sugar supports sustained energy.
Delicious snack for nutrition goals.

Main Highlights

20G PROTEIN PER BAR – Packed with high-quality milk protein, delivering more protein than 3 whole eggs to support muscle recovery and growth after training.
LOW SUGAR, HIGH FIBRE – With just 3.5g of sugar per bar, these chewy granola protein bars help maintain blood sugar levels while keeping you fuller for longer.
PRE OR POST-WORKOUT FUEL – Eat before workouts for an energy boost or after training to support muscle recovery. Ideal for cutting, bulking, and hitting your macros.
DELICIOUS & SATISFYING – A chewy granola oat bar designed to curb cravings, keep you satisfied, and help you stay on track with your nutrition goals.
VALUE PACK – 12 BARS – Get a cost-effective multipack of 12 protein bars, perfect for on-the-go snacking, meal replacements, or a high-protein diet.

Grenade High Protein, Low Sugar Bar - Caramel Chaos, 12 x 60 g (Packaging May Vary)

6% Off

Why We Love It

Packed with 21g protein.
Sugar content only 1.5g.
Certified by Informed Sport Programme.

Main Highlights

HIGH PROTEIN: Packed with protein, with 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 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

Bodybuilding Warehouse

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

15% 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!

9.0

Superb

Save 15%

We scanned 1561 products

We reviewed these offers relevant to the High Protein Flapjack 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 JB's TREK, Free From Direct, GET BUZZING, Uncle Jack's, OLYKE, AmazValue Global, Grenade, Bodybuilding Warehouse, all of which have a reputation for consistently delivering high-quality products that users love and innovative approaches for function & design.

For the best High Protein Flapjack Bars in the market, we considered we took a deep dive into 7806 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 JB's TREK High Protein Flapjack Original Oat, Gluten Free, Plant Based, Vegan Snack, 50 g x 36 Bars. We love many things about this product by JB's TREK. What sets it apart from the competition is Plant-based protein, 9g per flapjack, Rich source of dietary fiber, Deliciously satisfying oat flavor.
The best value product for most shoppers and where user satisfaction is continuously the highest is JB's TREK High Protein Flapjack Biscoff - Plant Based - Vegan Snack - 50 g x 36 bars by JB's TREK based on online reviews by bloggers, experts and online shoppers.
The biggest bargain at the moment for High Protein Flapjack Bars and the best cost-to-value ratio is BW Premium LUX 20g High Protein Flapjack Bars 24 x 75g - Oat Based Low Sugar Snack - Bodybuilding Warehouse (White Choc Raspberry)at Bodybuilding Warehouse with a 15% discount.
Our list of the best High Protein Flapjack 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 High Protein Flapjack Bars in The UK

Related Deals You Might Like for High Protein Flapjack Bars

Trek High Protein Flapjack Cocoa Oat, 50 g - Gluten Free Bars – Healthy Snack Bars – Plant Based Protein - Vegan Bars (Pack of 16 Bars) | L0572375-P107199021-M107199013

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)

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

SCI-MX High Protein White Choc Chip Blondie Box - 20g protein, 2g sugar + 259 calories per blondie - Pack of 12 x 65 g - Low Sugar - Pre/Post Workout Snack - No Palm Oil - Suitable for Vegetarians

BodyFuel High Protein Flapjack - 8g Protein, Low Sugar, High Fiber Snack for Pre-Workout & Post-Workout Recovery (Berry)(12 x 40g)

YuBi Protein Flapjacks - 12 Bar Variety Pack - Peanut Crunch and Chocolate Crisp Protein Bars, 13g Protein, High Fibre, Low Sugar, Gluten Free and Dairy Free, 12x50g

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

MM BIG Protein Flapjack 100g – 15g Protein – Mixed Berry Flavour – High-Protein Snack – 12 x 100g Bars | Oat Energy Bar for Muscle Recovery & Fitness | Healthy Meal Replacement & Pre/Post-Workout Fuel

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

TRIBE Protein Energy Flapjack - Choc Chip - Natural Energy - Plant Based, Vegan Snack & Gluten Free (50g x 12 Bars)

We scanned 1561 products

We concluded that: