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Best Sellers

These are Box of Proteins best selling protein bars, flapjacks, crisps, brownies and more! The list will update regularly so make sure you check back.

Snickers - Protein Bar

£2.29£2.99
You Save £0.70 / 23%
If you’re looking for a new and tasty way to enjoy protein in your diet, you’ll love this new Protein Bar! The new SNICKERS Protein bar contains just 200 calories and has the nutritional profile you would expect from a leading Protein Bar but with all the great taste of your favourite confectionery brand. The SNICKERS Protein Bar is a...

Grenade Carb Killa - White Chocolate Cookie

£2.39£2.99
You Save £0.60 / 20%
A triple-layered deliciously crunchy low carb high protein bar. High Protein – over 23g Per Bar* Low Carbs and Low Sugar Informed Sport approved and accredited KEY BENEFITS Carb Killa® is made using a specially selected baking process for exceptional taste resulting in a softer, crunchier texture. Carb Killa® is high in complete proteins, low in impact carbs and loaded...

Bounty - Protein Bar

£1.69£2.99
You Save £1.30 / 43%
Enjoy the refreshing chocolate coconut taste you love with the new Bounty Protein bar - This version is lower carb, lower sugar and packed with protein!   Nutrition Per 100g Per Bar (51g) Energy (kJ) 1575 803 Energy (kcal) 377 192 Fat 11.3g 5.7g - of which saturates 7.8g 4.0g Carbohydrate 34.0g 17.3g - of which sugars 16.6g 8.5g Protein...

Grenade Carb Killa - Chocolate Chip Cookie Dough

£2.39£2.99
You Save £0.60 / 20%
The new addition to the already amazing selection of Grenade Carb Killa bars. A triple-layered deliciously crunchy low carb high protein bar. High Protein – over 23g Per Bar* Low Carbs and Low Sugar Informed Sport approved and accredited KEY BENEFITS Carb Killa® is made using a specially selected baking process for exceptional taste resulting in a softer, crunchier texture....

Grenade Carb Killa - Peanut Nutter

£2.39£2.99
You Save £0.60 / 20%
A triple-layered deliciously crunchy low carb high protein bar. High Protein – over 23g Per Bar* Low Carbs and Low Sugar Informed Sport approved and accredited KEY BENEFITS Carb Killa® is made using a specially selected baking process for exceptional taste resulting in a softer, crunchier texture. Carb Killa® is high in complete proteins, low in impact carbs and loaded...

Milky Way - Protein Bar

£2.29£2.99
You Save £0.70 / 23%
New Milky Way Protein Bar! For an out of this world protein bar experience, you can now enjoy the light and delicious taste of Milky Way with a super galactic 19g of protein! Who can’t wait to get their teeth into the newest member of the Mars protein bar line up?! The new Milky Way Protein bar is a little denser...

Grenade Carb Killa - Caramel Chaos

£2.39£2.99
You Save £0.60 / 20%
A triple-layered deliciously crunchy low carb high protein bar. High Protein – over 23g Per Bar* Low Carbs and Low Sugar Informed Sport approved and accredited KEY BENEFITS Carb Killa® is made using a specially selected baking process for exceptional taste resulting in a softer, crunchier texture. Carb Killa® is high in complete proteins, low in impact carbs and loaded...

Grenade Carb Killa - Birthday Cake

£2.39£2.99
You Save £0.60 / 20%
The latest addition to our Carb Killa family has arrived, Birthday Cake Carb Killa now you really can have your (Birthday) cake and eat it...pre, intra or post workout! Super soft vanilla flavoured goodness, with sprinkles + an added bonus of 20g of protein.   Nutrition 100g 60g Energy (kj) 1516 910 Energy (kcal) 363 218 Fat 16g 9.5g - of which saturates 9.1g...

USN Low Sugar Protein Bar - Strawberry Cheesecake

£1.49£1.99
You Save £0.50 / 25%
Introducing USN’s ‘Low Sugar Protein Bar’ guaranteed to fulfil your cravings... and then some! Delivering a colossal 11g of protein and only 1.2g of sugar per bar, it’s the perfect choice for on-the-go protein intake. Available in Vanilla, Strawberry Cheesecake & Chocolate it will blow your taste buds away! This bar promises to deliver: Taste Low Sugar High protein A...

Grenade Carb Killa - Dark Chocolate Mint

£2.39£2.99
You Save £0.60 / 20%
A triple-layered deliciously crunchy low carb high protein bar. High Protein – over 23g Per Bar* Low Carbs and Low Sugar Informed Sport approved and accredited KEY BENEFITS Carb Killa® is made using a specially selected baking process for exceptional taste resulting in a softer, crunchier texture. Carb Killa® is high in complete proteins, low in impact carbs and loaded...

Grenade Carb Killa - Fudge Brownie

£2.39£2.99
You Save £0.60 / 20%
A triple-layered deliciously crunchy low carb high protein bar. High Protein – over 23g Per Bar* Low Carbs and Low Sugar Informed Sport approved and accredited KEY BENEFITS Carb Killa® is made using a specially selected baking process for exceptional taste resulting in a softer, crunchier texture. Carb Killa® is high in complete proteins, low in impact carbs and loaded...

Grenade Carb Killa - Chocolate Crunch

£2.39£2.99
You Save £0.60 / 20%
A triple-layered deliciously crunchy low carb high protein bar. High Protein – over 23g Per Bar* Low Carbs and Low Sugar Informed Sport approved and accredited KEY BENEFITS Carb Killa® is made using a specially selected baking process for exceptional taste resulting in a softer, crunchier texture. Carb Killa® is high in complete proteins, low in impact carbs and loaded...

PhD Smart Bar - Chocolate Peanut Butter (64g)

£2.49£3.29
You Save £0.80 / 24%
Description Great tasting 20g Protein Less than 2g sugar Palm oil free PhD Smart Bar™ is a great tasting, triple layered high protein, low sugar bar that is free from palm oil. Available in 5 delicious flavours and with 20g of quality protein and less than 2g of sugar per bar, PhD Smart Bar™ is the intelligent way to get...

Barebells Protein Bar - Cookies & Cream

£2.29£2.99
You Save £0.70 / 23%
NEW Barebells Cookies & Cream at Box of Protein! Inspired by the most loved cookie in American history, this bar is sure to satisfy any crazy, creamy craving. On top of that it has 20 grams of protein and no added sugar.   Nutrition Per 100g Per Bar (55g) Energy (kJ) 1499 825 Energy (kcal) 358 197 Fat 12g 7g -...

Grenade Carb Killa - Cookies & Cream

£2.39£2.99
You Save £0.60 / 20%
A triple-layered deliciously crunchy low carb high protein bar. High Protein – over 23g Per Bar* Low Carbs and Low Sugar Informed Sport approved and accredited KEY BENEFITS Carb Killa® is made using a specially selected baking process for exceptional taste resulting in a softer, crunchier texture. Carb Killa® is high in complete proteins, low in impact carbs and loaded...

Grenade Carb Killa - White Chocolate Mocha

£2.39£2.99
You Save £0.60 / 20%
A triple-layered deliciously crunchy low carb high protein bar. High Protein – over 23g Per Bar* Low Carbs and Low Sugar Informed Sport approved and accredited KEY BENEFITS Carb Killa® is made using a specially selected baking process for exceptional taste resulting in a softer, crunchier texture. Carb Killa® is high in complete proteins, low in impact carbs and loaded...

Battle Oats Battle Bites - Birthday Cake

£2.29£2.99
You Save £0.70 / 23%
Let’s party! Birthday Cake Battle Bites boasts a nice soft vanilla-infused cake style centre, with a jammy raspberry coloured caramel layer, covered in low sugar white chocolate and topped with naturally coloured sprinkles. Birthday Cake Battle Bites make a perfect protein treat for celebrating your fitness buddies most special day of the year. However, they’re so good you’ll want to...

Mountain Joe's Rocky Road Protein Bar - White Chocolate *LTD EDITION*

£2.29£2.99
You Save £0.70 / 23%
NEW Mountain Joe's Rocky Road Protein Bar White Chocolate *LTD EDITION*. Chocolate flavoured coated ''crispies'', marshmallows and toffee pieces with added protein. 15g of Protein Less than 5g of Sugar Non GMO   Nutrition Per 100g Per Bar (55g) Energy (kJ) 1951 1073 Energy (kcal) 465 256 Fat 19g 10g - of which saturates 15g 8.4g Carbohydrate 47g 26g - of...

USN Low Sugar Protein Bar - Vanilla

£1.49£1.99
You Save £0.50 / 25%
Introducing USN’s ‘Low Sugar Protein Bar’ guaranteed to fulfil your cravings... and then some! Delivering a colossal 11g of protein and only 1.2g of sugar per bar, it’s the perfect choice for on-the-go protein intake. Available in Vanilla, Strawberry Cheesecake & Chocolate it will blow your taste buds away! This bar promises to deliver: Taste Low Sugar High protein A...

Barebells Protein Bar - Caramel Cashew

£2.29£2.99
You Save £0.70 / 23%
NEW Barebells Caramel Cashew at Box of Protein! Tired of eating bars that taste like cardboard? This bar is far too gooey and chocolaty to compare to anything but the most decadent of desserts; and yet it has 20 grams of protein and no added sugar. Staying fit has never been this delicious.   Nutrition Per 100g Per Bar (55g)...

Grenade Carb Killa Go Nuts - Salted Peanut

£1.99£2.29
You Save £0.30 / 13%
Say hello to the latest addition to the Carb Killa® family: all hail the Go Nuts™ bar! This delicious Salted Peanut flavour treat is high in protein and low in sugar, making it the ultimate guilt-free snack to grab on the go. Featuring tons of nutritional benefits and absolutely nuttin’ artificial, the Go Nuts™ protein nut bar is set to revolutionise...

USN Low Carb Protein Delite 22 Bar - Banana Waffle

£2.69£2.99
You Save £0.30 / 10%
Amazing taste with the nutritionals to go with it 22g Protein and just 2g Sugars Assist muscular repair and limit calorie intake Guilt-free snack to keep those Sugar cravings away High Protein snack when on-the-go Taking great tasting, healthy snacks to the next level, the USN Low Carb Protein Delite 22s combine deliciously scrumptious flavours with great nutritionals. Each mouth-watering...

Mountain Joe's Rocky Road Protein Bar - Classic

£2.29£2.89
You Save £0.60 / 21%
NEW Mountain Joe's Rocky Road Protein Bar. Chocolate flavoured coated ''crispies'', marshmallows, Cherries and Raisins. 15g of Protein Less than 5g of Sugar Non GMO   Nutrition Per 100g Per Bar (55g) Energy (kcal) 427 235 Fat 22g 12g - of which saturates 17g 9.2g Carbohydrates 41g 23g - of which sugars 8.5g 4.7g Fibre 0.2g 0.1g Protein 27g 15g Salt 0.87g 0.48g...

Battle Oats Battle Bites - Chocolate Caramel

£2.29£2.99
You Save £0.70 / 23%
NEW Battle Bites Chocolate Caramel with Fudge Crumb Topping at Box of Protein! This is a battle cry to all caramel lovers! Our caramel layered low sugar chocolate bite-sized pieces have a soft chocolate core and fudge crumb topping that - when consumed - will take you to a whole new level of rich, caramel, chocolate euphoria! Battle Bites taste...

Battle Oats Battle Bites - Red Velvet

£2.19£2.99
You Save £0.80 / 27%
Yes this is as good as it looks. Battle Bites brings you Red Velvet, featuring two vanilla-flavoured white chocolate pieces, with a decadent red velvet centre, and soft gooey middle layer of chocolate caramel. You won’t believe this Red Velvet treat is only 3g sugar whilst providing 20g protein. Battle Bites are high protein, low sugar, guilt free triple layered...

Battle Oats Battle Bites - Choc Coconut

£2.29£2.99
You Save £0.70 / 23%
NEW Battle Bites Choc Coconut at Box of Protein! Bite your way to chocolate coconut euphoria! Choc Coconut is enrobed in low sugar milk chocolate, layered in caramel, and has a delightfully soft centre. Not quite satisfied your coconut demands? Ok so we added a healthy serving of coconut topping to each bite-sized piece. Each Battle Bite packs 20g of protein… hitting...

Barebells Protein Bar - White Chocolate Almond

£2.29£2.99
You Save £0.70 / 23%
A white chocolate and almond encased protein bar is as delicious as it sounds, it is the perfect – and guilt-free - choice for everyone on the lookout for that extra protein fuel or when your taste buds want something really tasty. The bar is completely free from added sugars and is enriched with 20 grams of protein. White chocolate...

Mountain Joe's Rocky Road Protein Bar - Peanut Butter

£2.29£2.89
You Save £0.60 / 21%
NEW Mountain Joe's Rocky Road Protein Bar. Chocolate flavoured coated ''crispies'', marshmallows, Peanuts and Raisins. 15g of Protein Less than 5g of Sugar Non GMO   Nutrition Per 100g Per Bar (55g) Energy (kcal) 438 241 Fat 24g 13g - of which saturates 17g 9.1g Carbohydrates 39g 21g - of which sugars 7.6g 4.2g Fibre 0.5g 0.3g Protein 28g 15g Salt 0.82g 0.45g...

Muscletech Nitro Tech Crunch - Vanilla Birthday Cake

£2.69£2.99
You Save £0.30 / 10%
High protein - 22g protein bar Baked centre for a superior softer texture Gluten free Great choice of candy coated bars in a range of delicious flavours High fibre content Extensive taste testing delivers the ultimate in flavour WHY Nitro-Tech Crunch Bars are superior to MuscleTech's previous low carb bar, Mission 1. Each bar has been designed to first and...

Fulfil Vitamin & Protein Bar - Chocolate Hazelnut Whip

£2.39£2.99
You Save £0.60 / 20%
An indulgent hazelnut centre covered in creamy milk chocolate and topped with crunchy hazelnut pieces, all with the added benefits of 20g protein, low sugar and 100% RDA of 9 multivitamins. This bar only contains 210kcal per serving.   Nutrition Per 100g Per Bar (55g) Energy (kJ) 1593 876 Energy (kcal) 382 210 Fat 18g 9.7g - of which saturates 9g 4.9g Carbohydrates...