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The 10 best protein bars to buy in the UK

Picture of a protein bar

The best protein bars offer a convenient source of protein and various other nutrients, making them a popular product for many people. However, not all protein bars are as healthy as they appear, with many having high sugar content that make them less effective than others. With so many options available, it’s difficult to know what the best protein bar is for your needs, especially when buying for the first time.

Check out the buying guide below for how to choose the best protein bar:

What are protein bars?

A protein bar is a nutritional snack with high protein content, featuring a much higher proportion compared to other nutrients such as carbohydrates and fats. Mostly used for dietary purposes, protein bars come with various purposes, such as meal replacement, increased energy, and building muscle.

Why should you buy a good protein bar?

A good protein bar offers various benefits for people on a strict diet or exercise regime. For instance, offering high protein content they are a popular snack for exercise enthusiast looking to build to muscle, with pre and post snack workout bars available.

Others use a protein bar as a meal replacement when dieting, with high protein content being a great nutrient for curbing appetites. Some people use protein bars for their high nutrient content, eating them as a healthy snack that offers ample energy.

Plus, being a small snack, protein bars are incredibly convenient no matter their purpose, offering a quick snack that can be eaten between meals or as a replacement meal.

How to choose the right protein bar in 2024?

Another picture of a protein bar

With so many different products to choose from, finding the best protein bar isn’t always easy. With so many ingredients, purposes, and flavours to choose from, it is important to make a few considerations before you buy.

  • Protein Content: The best protein bars have the highest protein content, so be sure to inspect this whenever buying. Some are deceptively low on protein, with a good average being around 20g per bar. Those with lower protein content may offset the difference with other macronutrients like carbs, which may be preferable depending on whether you’re exercising before or after you eat it.
  • Carb Content: The carb content of a protein bar is also important, with around 15-20g being the idea amount. Remember, you want more protein than anything else, so make sure to check the proportion of carbs to protein. However, higher carb content is good for certain purposes, typically high-cardio workouts they offer more sustained energy.
  • Sugar: Always try to buy protein bars with low sugar content, as this is an unnecessary ingredient that can hamper diets and workouts. Anything with around 1 to 2g of sugar is recommended and be sure avoid anything with 5g or more.
  • Flavour: Although mostly subjective, be sure to consider the flavour of the bar in relation to the ingredients. Yes, something more flavourful such as cookies and cream protein bar may taste amazing, but it should never be at the expense of healthy ingredients - you want protein and nutrients, not just a tasty snack!

What is the best kind of protein bar in the UK?

There are many types of protein bars available, all of which have different purposes and may be suitable for your needs.

  • Nutrition Bars: This type of protein bar balances high protein content with other nutrients and vitamins. This is great for getting all the stuff you need for a healthy diet or for a pre/post work out snack. Also good for a snack on the go as it offers a good balance of nutrients to keep you feeling good.
  • Low Carb Bars: Not all protein bars feature low amounts of carbs, which is often desired by those looking to build lean muscle while losing weight or for cutting back on carbs in general. A great protein bar for maintaining a steady blood sugar level, low carb bars also help to curb appetites.
  • Meal Replacement Bar: The best protein bars for dropping a few pounds, meal replacement bars are nutrient dense so are an excellent addition to a weight-loss diet.

Top 10 list of protein bars in the UK (2024)

The bestseller list compares brands and their protein bars. Which protein bar is the best?
Best choice TOP 1
Image of Grenade 482423 protein bar
Grenade High Protein, Low Sugar Bar - OREO, 12 x 60 g
  • Certified with the Informed Sport Programme and therefore suitable for use by drug…
  • This indulgent low sugar snack is perfect for enjoying at any time of the day as…
  • Each triple-layered bar consists of genuine OREO Vanilla, a protein nougat loaded…
Image of Amfit Nutrition 5400606010307 protein bar
Amazon Brand - Amfit Nutrition Low Sugar Protein Bar (19.6gr Protein…
  • This product is made with certified sustainable palm oil. The supplier of this product…
  • Not suitable for Nut, Peanut and Egg allergy sufferers due to manufacturing meth…
  • Warning: Excessive consumption may produce laxative effects
Image of Warrior P36546 protein bar
Warrior Raw Protein Flapjack, White Chocolate Cranberry - 12 bars
  • GREAT TASTE! - Chewy granola oat bar that can be eaten as a filling snack to help…
  • HUGE 20 GRAMS OF PROTEIN PER BAR - That's more than 3 whole eggs! Our bars are…
Offer TOP 4
Image of Nature Valley 7006300042 protein bar
Nature Valley Protein Peanut & Chocolate Gluten Free Cereal Bars…
  • Suitable for vegetarians; carefully selected ingredients
  • Great tasting bars with no artificial flavours, colours or preservatives
  • High in protein, high in fibre, gluten free; containing 20 Percent of your daily…
Image of Fulfil  protein bar
Fulfil Vitamin and Protein Bar (15 x 40 g Bars) — Chocolate…
  • 9 VITAMINS: Each FULFIL bar contains 30 percent RDA for 9 essential vitamins to support…
  • LIFE'S WONDERFUEL: We want FULFIL bars to fuel you on all of your everyday adventures,…
  • OUR PACKS CONTAIN 15 BARS: So you never run out of your favourite protein bar
Image of Amfit Nutrition 5400606969575 protein bar
Amazon Brand - Amfit Nutrition Low Sugar High Protein Bars, Dark Chocolate…
  • Not suitable for Peanuts and Eggs allergy sufferers and Coeliacs due to manufacturing…
  • High Fibre
  • The perfect snack for on-the-go
Image of Bounty MAR020 protein bar
Bounty Hi Protein Bar (12 x 52g), High Protein Energy Snack with Milk…
  • Only 207 kcals per bar - Not suitable for vegetarians
  • Each bar comes in two pieces, just like your favourite Bounty chocolate, smothered…
  • Every case contains 12 individually wrapped bars perfect for a post workout snac…
Image of Mars  protein bar
Mars Hi Protein Bar (12 x 59g) - High Protein Energy Snack with Caramel,…
  • Only 207 kcals per bar. Not suitable for vegetarians.
  • Every case contains 12 individually wrapped bars perfect for a post workout snac…
  • Contains 54% less sugar than a standard Mars 51g bar
Image of Grenade 2000-10-59-0A protein bar
Grenade Carb Killa High Protein and Low Carb Bar, 12 x 60 g - Chocolate…
  • Please Note - This product contains peanuts
  • Certified with the informed sport programme and therefore suitable for use by drug…
  • This indulgent low sugar snack, is perfect for enjoying at any time of the day as…
TOP 10
Image of Eat Natural 257671 protein bar
Eat Natural Protein Bars, Protein Packed Peanuts & Chocolate Nut…
  • TASTES OF NATURE - Bursting with the authentic taste of nature, savour the mix of…
  • MINIMAL FUSS - Nature’s own ingredients taste so good; they pretty much speak…
  • WE CHOOSE QUALITY - We only want to work with the best that nature has to offer so…
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We participate in the Amazon Associates Program. As an Amazon Associate we earn from qualifying purchases. We consider only products that are available on Amazon while the ranking is based on factors such as customer reviews, number of sales and keyword. Last Update: 2024/04/18.