10 Best Isopure Protein Powder Unflavoured in The UK

Last updated on 15/08/2025
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Best Choice
1
9.9
Exceptional
Save 13%
Optimum Nutrition Gold Standard Whey Muscle Building and Recovery Protein Powder With Naturally Occurring Glutamine and Amino Acids, Unflavoured, 75 Servings, 2.25kg, Packaging May Vary
Optimum Nutrition
Optimum Nutrition Gold Standard Whey Muscle Building and Recovery Protein Powder With Naturally Occurring Glutamine and Amino Acids, Unflavoured, 75 Servings, 2.25kg, Packaging May Vary
13% OffFree Shipping
Why We Love It
  • Supports fitness journey from day one.
  • Aids muscle gain and recovery.
  • Choice of delicious flavours available.
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
9.9
Exceptional
Save 13%
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Best Value
2
9.7
Exceptional
PINK SUN Organic Whey Protein Concentrate Powder Unflavoured 1kg (80% Protein with BCAA) Soy Free Grass Fed Gluten Free No Additives Vegetarian Undenatured Non GM Certified Bio UK
PINK SUN
PINK SUN Organic Whey Protein Concentrate Powder Unflavoured 1kg (80% Protein with BCAA) Soy Free Grass Fed Gluten Free No Additives Vegetarian Undenatured Non GM Certified Bio UK
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Why We Love It
  • Pure, certified organic protein.
  • Promotes glutathione production.
  • Perfect for vegetarians.
Main Highlights
  • CERTIFIED ORGANIC, 100% pure, undenatured whey protein concentrate powder 1kg
  • Unflavoured natural taste - no additives, no added sugar or artificial sweeteners - Make your own delicious high protein creamy milkshakes
  • From grass-fed, rBGH hormone-free organic cows' milk with 80% protein
  • Contains essential branch chain amino acids (BCAA) and immunoglobulins to assist in glutathione production
  • Certified organic by the Soil Association - Gluten free, soy free, suitable for vegetarian and wholefood diets
9.7
Exceptional
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3
9.6
Superb
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
PINK SUN
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
Free Shipping
Why We Love It
  • Premium quality ensures exceptional results.
  • Suitable for many diets.
  • Ultra-filtered for pure protein.
Main Highlights
  • Premium quality, SOY FREE, undenatured whey protein isolate powder 1kg
  • From grass-fed hormone-free cows' milk with 92% protein
  • Ultra-filtered to remove carbohydrate, fat and lactose
  • Unflavoured natural taste - no added sugar or artificial sweeteners
  • Gluten free, suitable for vegetarian and wholefood diets
9.6
Superb
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4
9.5
Superb
Save 20%
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
Isopure
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
9.5
Superb
Save 20%
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5
9.3
Superb
Bulk Pure Whey Protein Powder Shake, Unflavoured, 1 kg, Packaging May Vary
Bulk
Bulk Pure Whey Protein Powder Shake, Unflavoured, 1 kg, Packaging May Vary
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Why We Love It
  • Award-winning protein shake for training.
  • Packed with nutrients and protein.
  • Low-fat, low-sugar delicious flavours.
Main Highlights
  • Delivers 22g or 23g of high-quality protein per serving (depending on flavour), sourced from premium whey protein concentrate to support your daily nutrition and fitness goals
  • A complete protein source containing all essential amino acids, including 5g of naturally occurring BCAAs per scoop; Ideal for muscle maintenance
  • Designed to mix easily with water or milk, creating a smooth and enjoyable shake; Low in sugar making it suitable for various nutrition plans
  • Available in over 20 delicious flavours and multiple pack sizes including 500g, 1kg, 2.5kg and 5kg, making it easy to find the right option to match your taste and usage needs
  • Manufactured to high quality standards and suitable for vegetarian diets; A reliable protein source for athletes, gym-goers, or anyone looking to boost their protein intake
9.3
Superb
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6
9.1
Superb
Save 25%
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
Optimum Nutrition
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.
9.1
Superb
Save 25%
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7
8.9
Excellent
MyProtein Impact Whey Isolate - Unflavoured - 500g - 20 Servings
Myprotein
MyProtein Impact Whey Isolate - Unflavoured - 500g - 20 Servings
Free Shipping
Why We Love It
  • Purest protein powder available. High protein per serving. Low fat and sugar.
Main Highlights
  • One of the purest protein powders
  • High in protein. 23g protein packed into every serving*
  • Low fat, low sugar*
  • 0.6g of carbs per serving*
8.9
Excellent
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8
8.8
Excellent
Save 4%
MyProtein Impact Whey Protein Powder – Unflavoured – 1kg, 23g of Protein per Serving, Supports Muscle Building, Recovery & Lean Muscle Maintenance - 40 Servings
Myprotein
MyProtein Impact Whey Protein Powder – Unflavoured – 1kg, 23g of Protein per Serving, Supports Muscle Building, Recovery & Lean Muscle Maintenance - 40 Servings
4% Off
Why We Love It
  • Impressive protein value per serving.
  • Low calories count.
  • Abundance of flavors choices.
Main Highlights
  • EVERYDAY PROTEIN - Premium whey packed with 21g of protein per serving, for the everyday protein you need from a quality source. Can be used by both men and women, perfect for everyone, whatever your fitness goals
  • VARIETY OF FLAVOURS - Get yours in over 40, indulgent, mouth-watering flavours, including some delicious favourites such as Chocolate, Vanilla, and Strawberry Cream. If you prefer a more natural taste, we’ve got a range of stevia flavoured options too!
  • EASY TO USE - It’s fast absorbing, so we recommend adding 1 large scoop (25g) to 150-250ml of water or milk 30-60 minutes post-workout — but it’s ideal any time for a convenient way to get the protein you need
  • LOW IN SUGAR AND FAT - Vegetarian friendly with just 1.9g of fat, 1g of carbs, and at just 103 calories per serving, our Impact Whey Protein makes the perfect shake for everyone
  • QUALITY ASSURANCE - There’s simply not another protein powder out there that delivers the same outstanding quality and value. And that’s because at MyProtein, our products are created in our own state-of-the-art production facility. Our popular Impact Whey Protein provides over 80% protein per serving, so you can be assured of its quality
8.8
Excellent
Save 4%
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9
8.8
Excellent
The Organic Protein Co - Pure Unflavoured Organic Whey Protein Powder | Additive Free, Undenatured, Bioactive, UPF Free, Emulsifier Free, Primarily Grass Fed, Vegetarian, Gluten Free – 400g
The Organic Protein Company
The Organic Protein Co - Pure Unflavoured Organic Whey Protein Powder | Additive Free, Undenatured, Bioactive, UPF Free, Emulsifier Free, Primarily Grass Fed, Vegetarian, Gluten Free – 400g
Free Shipping
Why We Love It
  • Pure, organic grass-fed protein.
  • Fast and easy digestion.
  • Ensures nutrient transparency.
Main Highlights
  • JUST ONE INGREDIENT: No chemicals, additives, ultra-processed foods (UPFs), sweeteners, flavourings, emulsifiers, thickeners, or any of that nonsense. Just pure organic whey protein from primarily grass fed cows grazing on open pastures in the UK and other European countries. Batch tested, with nutritional test certificates published for every batch, from an independent lab
  • UNDENATURED & BIOACTIVE: With naturally occurring Alpha Lactalbumin, Beta Lactoglobulin, Immunoglobulin G (IgG), and Lactoferrin. These useful bioactive proteins & antibodies are also found in human breast milk (except for B. Lactalbumin). With too much heat they’re denatured, so they can’t be utilised by our bodies. Good news: 3rd party testing shows 80% of our whey protein remains completely undenatured. Denatured whey protein is still valuable muscle food, just without the bioactive benefits.
  • CLEAN CREAMY TASTE: Gently filtered from fresh whey at a cutting-edge ceramic cold filtration facility without any chemicals or excessive heat. The result is a delightful clean creamy taste, free from weird flavours, odd aftertastes, and absolutely no grittiness at all. This almost a totally flavourless protein powder, if not for the irresistible creaminess.
  • PREMIUM VEGETARIAN PROTEIN: A natural vegetarian protein powder, packed with highly bioavailable naturally occurring essential & branched chain amino acids (BCAAs). Our bodies are unable to produce these vital building blocks of healthy muscle tissue, so dietary sources are needed. We use fresh liquid whey, a by-product from cheesemakers using friendly bacteria to lightly ferment the milk in order to separate the curds from the whey, therefore no animal rennet is needed.
8.8
Excellent
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10
8.7
Excellent
Purition - 100% Whey Protein Isolate, 93% Protein, Triple-Filtered, Unsweetened, Unflavoured, Soy Free, Low Fat, 23g Protein per Serving, 20 Servings - 500g
Purition
Purition - 100% Whey Protein Isolate, 93% Protein, Triple-Filtered, Unsweetened, Unflavoured, Soy Free, Low Fat, 23g Protein per Serving, 20 Servings - 500g
Why We Love It
  • Apologies for the confusion, but I would be able to provide accurate points once I have specific information about a product you want me to describe. Could you please provide some details about the show?
Main Highlights
  • 100% Pure Whey Protein Isolate – 93% Protein Content Finely filtered for exceptional purity, delivering 23g of high-quality protein per 25g serving. Made with nothing but 100% whey protein isolate. No sweeteners, flavours, thickeners or fillers. Just pure, clean protein. Each 500g bag provides 20 servings.
  • All 9 Essential Amino Acids & Naturally Rich in BCAAs Supports muscle repair, post-exercise recovery and everyday nourishment. Contains the full spectrum of essential amino acids, including naturally occurring BCAAs, to help your body perform and recover better - no synthetic additions needed.
  • Plain, Unflavoured & Unsweetened No sickly taste, no artificial sweetness - just protein you can make your own. Blend into smoothies, stir into oats or yoghurt, or add to savoury dishes without overpowering flavour. Ideal for anyone who prefers their protein plain, simple and versatile.
  • Easy to Digest & Gentle on the Stomach Low in lactose and free from gums or emulsifiers, this is a light, easy-to-digest protein, ideal for daily use, even if you’re sensitive to dairy. No bloating, no heavy feeling - just a clean source of nourishment you can count on.
  • Supports Healthy Weight Loss & Balanced Eating Protein helps keep you full and supports lean muscle - making it an easy way to improve your breakfast, recover well after exercise or eat smarter overall. Loved by thousands across the UK for its simplicity, quality and real-food integrity.
8.7
Excellent
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