10 Best Isopure Whey Protein Isolate in The UK

Last updated on 15/08/2025

Advertising disclosure

Optimum Nutrition Platinum Hydro Whey, Hydrolysed Whey Protein Isolate Powder with Essential Amino Acids, Glutamine and BCAA, Milk Chocolate Flavour, 40 Servings, 1.6 kg

6% OffFree Shipping

Why We Love It

Supports your active fitness routine.
Low in sugars and fat.
Easy to mix formula.

Main Highlights

Pure hydrolysed whey protein isolate powder designed to support your strength training, CrossFit routine, gym workout, and fitness sessions
Each serving contains 30 g of the FASTEST DIGESTING PROTEIN for the growth and maintenance of muscle mass*
Carefully formulated with 9.5 g of both naturally occurring BCAAs and added amino acids
Hydrolysed whey protein isolates deliver the PUREST FORM OF WHEY PROTEIN with minimal amounts of fat and sugars; ONLY 1 g OF SUGARS OR LESS and no more than 0.5 g of fat per serving
An EASY TO MIX, the any-time protein formula that provides an extra source of protein throughout the day, in three varieties: Milk Chocolate, Super Strawberry, and Vanilla Bean
For a tasty protein shake add 1 scoop of the whey isolate to 260 ml of water and shake, stir, or blend well
*Source: Official Journal of the European Union - COMMISSION REGULATION (EU) No 432/2012

Premium Body Nutrition

PBN Premium Body Nutrition - Whey Isolate Protein Powder, Chocolate - 75 Servings, 2.27 kg (Pack of 1)

Free Shipping

Why We Love It

High-quality Whey Protein isolate.
Promotes muscle growth maintenance.
Supports bone health.

Main Highlights

Chocolate - Whey Protein-ISOLATE with 87Percentage+ Protein, 2.27 kg, jar with a delicious Banana flavour
A jar with a delicious Banana flavour
Protein contributes to growth in muscle mass and to the maintenance of normal bones.
1-Protein contributes to a growth in muscle mass.
2-Protein contributes to the maintenance of normal bones.

MuscleTech NitroTech Whey Protein Powder, Muscle Maintenance & Growth, Whey Isolate Protein Powder With 3g Creatine, Protein Shake For Men & Women, 7.3g BCAA, 40 Servings, 1.8g, Strawberry

Free Shipping

Why We Love It

Promotes increased strength effectively.
Contains researched creatine monohydrate.
Improves muscle building potential.

Main Highlights

30G OF WHEY PROTEIN - MuscleTech Nitro-Tech delivers 30g of whey protein per scoop which contributes to the growth and maintenance of muscle mass, no matter what your training goals, Nitro-Tech will help you get there
BUILD MORE STRENGTH: Contains a researched 3 g dose of creatine monohydrate, which helps to build more strength
BETTER MACRONUTRIENT PROFILE - No underdosed ingredients or fillers in this formula, every fully disclosed scoop of Nitro-Tech provides high quality nutrition for optimal results
WHAT'S INSIDE COUNTS - We don’t use heat, harsh acids or salt, our whey protein has been filtered using multi-phase filtration technology for less fat, lactose and impurities than cheaper protein sources
FLAVOUR SATISFACTION: Every Nitro-Tech flavour has the mouth-watering taste you’ll love, when your goals are so close that you can taste them, drink up

Reflex Nutrition Isolate Pro - 83% Premium Protein from Whey Isolate Protein Powder - Fast Absorption, Low Lactose, Low Fat, Low Sugar Protein Shake - Muscle Gain (Vanilla, 1.8kg, 60 Servings)

25% OffFree Shipping

Why We Love It

High protein without extra calories.
Optimal for muscle gain.
Effortlessly blends into shakes.

Main Highlights

Premium Protein Excellence: Reflex Isolate Pro is made from whey isolate stripped of most fats and carbs, ensuring high protein purity - Ideal for increasing protein intake without extra calories and suitable for those with lactose intolerance
Optimal Nutritional Values: Each 30g scoop of whey protein isolate provides 25g of protein, Less than 0.5g of fat and Less than 0.5g of carbs - The ideal choice for those seeking muscle gain and lean mass maintenance with minimal calorie intake (103 kcal per serving)
Effortless Mixing: This whey protein powder blends smoothly into water or milk for silky protein shakes and can be easily incorporated into various culinary creations, serving as a post workout muscle growth aid or a healthy protein snack
Optimised for Rapid Recovery: Reflex grass fed whey protein powder is ultra-filtered for fast absorption, making it as a post workout protein snack - With whey protein isolate, it's the highest purity whey to maximise muscle growth
Manufactured in an informed sport registered facility: Reflex Isolate Pro whey protein supplement is vegetarian-friendly, Halal-certified, free from hormones, and with no added sugars, artificial colours or soy protein - Contains soy derivatives

Isopure Unflavoured Whey Protein Isolate Powder, High in Protein with 25 g per Serve, Low in Sugar, No Artificial Flavours or Sweeteners, Made with Only 2 Ingredients, 435 g

20% OffFree Shipping

Why We Love It

Pure ingredients for pure nutrition.
High protein to fuel your day.
Versatile for any recipe.

Main Highlights

MADE WITH INGREDIENTS YOU NEED, NOTHING YOU DON'T: Only 2 ingredients, including 100% pure whey protein isolate because when it comes to looking and feeling good, LESS IS MORE
25 G HIGH PROTEIN PER SERVING: Delivers 25g protein from 100% Whey Protein Isolate to complement your daily routine and support your protein intake
LOW SUGAR AND LOW FAT: Isopure Unflavoured Whey Isolate delivers high-quality protein with minimal sugar and fat - an effortless way to boost your intake without unecessary extras
NO ARTIFICIAL FLAVOURS OR SWEETENERS*: Enjoy an unflavoured protein powder with simple ingredients and no artificial flavours, just great-tasting nutrition
EASY TO BLEND, BAKE, OR COOK: Blend into smoothies, use in baking to make protein brownies, or add to recipes for a protein-rich meal; however you take it, Isopure Whey Protein Isolate fits effortlessly into your lifestyle; *Contains Steviol Glycosides from Stevia, with no artificial sweeteners

Optimum Nutrition ON Gold Standard 100% Isolate Pure Whey Protein, Naturally Occurring BCAAs and Glutamine, Pre and Post Workout, Vanilla Flavour, 31 Servings, 930 g

20% OffFree Shipping

Why We Love It

High in quality whey protein.
Support muscle growth and maintenance.
Low in sugar and fat.

Main Highlights

Gold Standard whey protein powder contains 25g (83 percent) of high quality 100 percent pure whey isolate protein blend per serving to suport lean muscle gain*
Whey protein isolate is ultra-filtered for exceptional purity; it supports the growth and maintenance of muscle mass and the maintenance of normal bones*
Informed Choice certified ON whey protein powder contains low sugar (0.3 g), low fat (0.4 g) and 5.5 g of naturally occurring essential amino acids, BCAAs, per serving
This high protein powder is perfect as a protein shake, pre workout and post workout for both men and women; comes in vanilla, chocolate and strawberry flavours
To create perfect protein drinks, add 30 g (1 rounded scoop) to 200 ml of cold water and mix well

Optimum Nutrition Gold Standard Whey Protein, Muscle Building Powder with Naturally Occurring Glutamine and Amino Acids, Double Rich Chocolate, 29 Servings, 899 g, Packaging May Vary

25% OffFree Shipping

Why We Love It

Supports muscle gain and recovery.
Certified, low-sugar protein formula.
Variety of sizes, flavors.

Main Highlights

Optimum Nutrition’s Gold Standard 100% WHEY is the world’s best-selling protein powder* designed to support your fitness journey from day one.
FAST-ABSORBING whey protein with whey protein isolate as the main ingredient helps with muscle gain and supports recovery* after every training session.
The ON whey protein formula is Informed Choice certified, contains naturally-occurring BCAAs and GLUTAMINE and is LOW IN SUGAR and fat.
Available in a VARIETY OF SIZES and FLAVOURS: double rich chocolate, banana cream, vanilla ice cream, unflavored protein powder and more.
EASY & CONVENIENT: mix one scoop in 180-240 ml of cold water; best enjoyed in the morning or/and during the 30 minutes just before or immediately after training.
*Source: Euromonitor International Limited; Consumer Health 2023 edition, Sports Protein Powder category, % retail value shares, 2022 data.
** Source EFSA Journal 2010;8(10):1811; 2011;9(6):2203.

MyProtein Impact Whey Protein Powder – Vanilla Flavour– 1kg, 22g of Protein per Serving, Supports Muscle Building, Recovery & Lean Muscle Maintenance - 33 Servings

4% OffFree Shipping

Why We Love It

Great protein to calorie ratio.
Quality assured by Labdoor.
Incredible flavor variety.

Main Highlights

High-Quality Protein Source: Delivers 23g of premium protein per serving, helping to fuel your muscles and support your fitness goals with each shake.
Low-Calorie & Nutrient-Rich: Only 114 calories per serving, with just 1.9g of fat and 1.8g of carbs, making it a perfect choice for those who want to boost their protein intake without excess calories.
Rich in Essential Amino Acids: Includes essential amino acids and BCAAs, crucial for muscle recovery and growth, providing the nutrients your body needs to repair and build muscle.
Wide Variety of Flavours: Over 40 delicious flavours to choose from, including popular favourites like Chocolate Brownie, Cookies & Cream, and Peach Tea, ensuring you never get bored of your protein shake.
Informed Choice Certified: Backed by Informed Choice certification, giving you confidence that this product is regularly tested and free from banned substances, meeting global sports nutrition quality standards.

Dymatize ISO 100 Hydrolyzed Gourmet Chocolate 932g - Whey Protein Hydrolysat + Isolat Pulver

Free Shipping

Why We Love It

Promotes lean and powerful physique.
Effortless to digest due to enzymatic hydrolysis.
Suitable for vegetarians, gluten-free.

Main Highlights

THE TOP-QUALITY RECIPE of our whey isolate protein powder delivers 25 g of the highest-quality protein per serving with BCAAs and L-leucine, making it both gluten free and suitable for vegetarians
HYDROLYSIS breaks the whey protein isolate into smaller amino acid chains, which makes it exceptionally quick to absorb and the perfect choice before or after training
THE FAT AND SUGAR-FREE protein powder contains less than 116 calories per serving (mixed with water), making it perfect for athletes who are optimising both their protein and calorie intakes
ACCORDING TO INFORMED CHOICE, every substance in the iso whey protein powder is of the highest standard, so athletes can rest easy knowing their product is top quality, especially during competitions
WINNER OF the isolate of the year award from 2013 to 2017, our ISO 100 premium protein powder meets the highest quality standards and is the perfect protein supplement before and after training

MyProtein Impact Whey Protein Powder – Chocolate Smooth Flavour – 1kg, 23g of Protein per Serving, Supports Muscle Building, Recovery & Lean Muscle Maintenance – 33 Servings

Free Shipping

Why We Love It

High in protein content.
Low on calories.
Ranking high for quality.

Main Highlights

Low fat and carbohydrate.
Contributes to the growth and maintenance of muscle mass.
Ideal for anyone looking to increase daily protein intake.
Available in a range of delicious flavours.

8.8

Excellent

We scanned 213 products

We reviewed these offers relevant to the Isopure Whey Protein Isolate 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 Optimum Nutrition, Premium Body Nutrition, Muscletech, Reflex, Isopure, Myprotein, Dymatize, all of which have a reputation for consistently delivering high-quality products that users love and innovative approaches for function & design.

For the best Isopure Whey Protein Isolate in the market, we considered we took a deep dive into 1066 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 Optimum Nutrition Platinum Hydro Whey, Hydrolysed Whey Protein Isolate Powder with Essential Amino Acids, Glutamine and BCAA, Milk Chocolate Flavour, 40 Servings, 1.6 kg. We love many things about this product by Optimum Nutrition. What sets it apart from the competition is Supports your active fitness routine. , Low in sugars and fat. , Easy to mix formula.
The best value product for most shoppers and where user satisfaction is continuously the highest is PBN Premium Body Nutrition - Whey Isolate Protein Powder, Chocolate - 75 Servings, 2.27 kg (Pack of 1) by Premium Body Nutrition based on online reviews by bloggers, experts and online shoppers.
The biggest bargain at the moment for Isopure Whey Protein Isolate and the best cost-to-value ratio is Optimum Nutrition Gold Standard Whey Protein, Muscle Building Powder with Naturally Occurring Glutamine and Amino Acids, Double Rich Chocolate, 29 Servings, 899 g, Packaging May Varyat Optimum Nutrition with a 25% discount.
Our list of the best Isopure Whey Protein Isolate 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 Isopure Whey Protein Isolate in The UK

Related Deals You Might Like for Isopure Whey Protein Isolate

Isopure Collagen Powder Raspberry Lemonade Flavour with Vitamin C for Skin & Joint Support – 20 g Collagen per Serve, Sugar-Free, No Artificial Flavours or Sweeteners – 345 g

Bulk Pure Whey Protein Powder Shake, Unflavoured, 1 kg, Packaging May Vary

Bulk Pure Whey Isolate 90 | Vanilla | 25g Protein per Serving | Ultra-Filtered Whey Isolate | Low Sugar | Low Fat | Fast Absorption | Supports Muscle Maintenance | 1kg | High Protein Shake

PINK SUN Whey Protein Isolate Powder Unflavoured 1kg (92% Protein) Soy Free Grass Fed Gluten Free No Additives Vegetarian Undenatured Non GM Unsweetened Natural Whey UK 1000g

Impact Whey Isolate Protein Powder, Natural Chocolate

Vilgain® Whey Protein Powder, Grass Fed | 100% Pure Whey Protein Powder | Fast Muscle Recovery and Building | Natural Taste | Premium Quality Powder (1000g, Unflavoured)

Organic Whey Protein Powder (300g) - Grass Fed Unflavoured Organic Protein Powder by TheHealthyTree Company - Low Carb Natural Protein for Muscle Growth & Recovery

PBN - Premium Body Nutrition - Whey-Isolate Protein Powder, 1kg, Chocolate - 33 Servings

Bulk Clear Whey Isolate | Tropical | 20g Protein per Serving | Low Sugar | Refreshing Fruity Flavours | 86 Calories | Fast Absorbing | Hydrating Protein Drink | 500g

Purition - 100% Whey Protein Isolate, 93% Protein, Triple-Filtered, Unsweetened, Unflavoured, Soy Free, Low Fat, 23g Protein per Serving, 20 Servings - 500g

We scanned 213 products

We concluded that: