Isolate Whey — price per gram of protein (United Kingdom)

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£0.057 median of 85 in-stock listings. Updated 26 Aug 2026.

1–85 of 85 products.Updated 26 Aug 2026

£/g protein ▼DosePriceSizeFormTypeRatingName
~£0.37~24 g£170.004.53 kg · 19 srvPowderIsolate4.5 (359)Optimum Nutrition Gold Standard 100% Whey Protein Powder, 4.53 kg | Delicious Strawberry, 146 Servings, 24 g Protein, BCAA, Low Sugar, Fast-Digesting Isolate, Supports Muscle Growth and Repair
£0.1024 g£24.00300 g · 10 srvPowderIsolate4.6 (367)Optimum Nutrition Gold Standard 100% Whey Protein Powder, 300 g | Vanilla Ice Cream, 10 Servings, 24 g Protein, BCAA, Low Sugar, Fast-Digesting Isolate, Supports Muscle Growth and Repair
~£0.092~27 g£33.20400 g · 13 srvPowderIsolate4.4 (112)Protero Kefir Protein Isolate | Fermented Whey | Creamy, Milky Taste
£0.08725.8 g£4.4960 g · 2 srvPowderIsolate5 (1)Whey Protein Isolate 90% - All Flavours (Unflavoured, 60g (2 Servings))
£0.08723 g£29.99450 g · 15 srvPowderIsolate—Per4m Whey Hydrate | 23g Whey Isolate & Aquamin Electrolytes | Muslce Growth & Hydration | Clear, Refreshing & Low in Sugar | 15 Serving (450g, Blueberry Peach)
£0.08723 g£29.95500 g · 15 srvPowderIsolate4.2 (24)EHP Labs OxyWhey Lean Whey Protein Powder - 23g of Whey Isolate Protein, Meal Replacement Shake, Sugar Free Protein Powder - 15 Serves, Vanilla Ice Cream
£0.08025 g£30.00435 g · 15 srvPowderIsolate4.3 (172)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
£0.08025 g£30.00450 g · 15 srvPowderIsolate4.4 (3.2k)Optimum Nutrition Gold Standard 100% Isolate for Muscle Support and Repair, High Whey Protein Powder with BCAA Amino Acids, Low Sugar, Low Fat Sports Nutrition, Chocolate Flavour, 15 Servings, 450g
£0.08025 g£30.00480 g · 15 srvPowderIsolate4.2 (109)Isopure Chocolate Whey Protein Isolate Powder, High in Protein with 25 g per Serve, Low in Sugar, No Artificial Flavours or Sweeteners, Made with Only 6 Ingredients, 480 g
£0.08025 g£29.95500 g · 15 srvPowderIsolate3.4 (4)EHP Labs OxyWhey Lean Whey Protein Powder - 25g of Whey Isolate Protein, Meal Replacement Shake, Sugar Free Protein Powder - 15 Serves, Strawberry Milkshake
£0.07824 g£37.34600 g · 20 srvPowderIsolate4.5 (35)Olimp Sport Nutrition 100 Percent Natural Whey Protein Isolate (600 g) Unflavoured
£0.07525 g£58.00930 g · 31 srvPowderIsolate4.6 (2.7k)Optimum Nutrition Gold Standard 100% Isolate Whey Protein Powder, 930g | Vanilla, 31 Servings, BCAAs and Glutamine, Pre and Post Workout, Supports Muscle Growth and Repair
£0.07525 g£57.98930 g · 31 srvPowderIsolate4.4 (3.2k)Optimum Nutrition Gold Standard 100% Isolate Whey Protein Powder, 930g | Chocolate, 31 Servings, BCAAs and Glutamine, Pre and Post Workout, Supports Muscle Growth and Repair
£0.07524 g£50.111 kg · 28 srvPowderIsolate4.8 (45)AMIX - Isolate Protein - MuscleCore CFM Nitro 1 kg - Promotes Muscle Development and accelerates Recovery - Contains Aminogen Digestive Enzymes - Whey Protein Powder - Milk Vanilla Flavor
£0.07424 g£50.00896 g · 28 srvPowderIsolate4.5 (2.8k)Optimum Nutrition Gold Standard 100% Whey Protein Powder, 896 g | Chocolate Hazelnut,28 Servings,24g Protein, BCAA, Low Sugar, Fast-Digesting Isolate, Supports Muscle Growth and Repair
£0.07423 g£34.00500 g · 20 srvPowderIsolate4.7 (71)Purition - 100% Whey Protein Isolate, 93% Protein, Triple-Filtered, Unsweetened, Unflavoured, Soy Free, Low Fat, 23g Protein per Serving, 20 Servings - 500g
£0.07324 g£28.18500 g · 16 srvPowderIsolate4 (196)Bulk Natural Pure Whey Protein Isolate, Chocolate, 500 g | No Artificial Sweetners
~£0.072~27 g£64.991 kg · 33 srvPowderIsolate5 (4)Unflavoured Whey Protein Isolate Powder | Pure Whey Protein Isolate Powder 1kg with Sunflower Lecithin | Made in The UK (1kg)
£0.07126 g£55.75900 g · 30 srvPowderIsolate4.3 (8)Myprotein Impact Whey Isolate Powder | Natural Vanilla - 30 Servings | Up to 26 g Ultra-Filtered Whey Protein Per Serving | Fast-Absorbing for Muscle Growth & Recovery | Low Sugar & Fat
£0.07025.8 g£28.99500 g · 16 srvPowderIsolate4.1 (7)Whey Protein Isolate 90% - All Flavours (Unflavoured, 500g)
£0.06924 g£50.00900 g · 30 srvPowderIsolate4.4 (1.1k)Optimum Nutrition Gold Standard 100% Whey Protein Powder, 900 g | Unflavoured, 30 Servings, 24 g Protein, BCAA, Low Sugar, Fast-Digesting Isolate, Supports Muscle Growth and Repair
£0.06924 g£50.00900 g · 30 srvPowderIsolate4.6 (1.8k)Optimum Nutrition Gold Standard 100% Whey Protein Powder, 900 g | White Chocolate Raspberry,30 Servings,24g Protein,BCAA, Low Sugar,Fast-Digesting Isolate,Supports Muscle Growth and Repair
£0.06924 g£25.00450 g · 15 srvPowderIsolate4.7 (1.6k)Optimum Nutrition Gold Standard 100% Whey Protein Powder, 450 g | Vanilla Ice Cream, 15 Servings, 24 g Protein, BCAA, Low Sugar, Fast-Digesting Isolate, Supports Muscle Growth and Repair
£0.06924 g£79.991.87 kg · 48 srvPowderIsolate4.6 (440)BSN Nutrition Protein Powder Syntha 6 Edge Low Carb and Sugar Whey Protein Shake with Whey Protein Isolate and BCAAs, Muscle Gain Powder, Vanilla Ice Cream Flavour, 48 Servings, 1.87 kg
~£0.068~23 g£52.491 kg · 33 srvPowderIsolate4.3 (95)Impact Whey Isolate Protein Powder, Strawberry Cream Impact whey Isolate (1000g) Strawberry Cream
£0.06819 g£25.99500 g · 20 srvPowderIsolate4.1 (136)Protein Iced Coffee | 19g Protein & 80mg Caffeine per Serving | Only 97Kcal | Low Calorie + High Protein | Whey Protein & Pea Protein Isolate Blend + Digestive Enzymes | Café Frappé | Free Soul
£0.06822 g£44.99825 g · 30 srvPowderIsolate4.1 (233)Legion Whey+ Whey Isolate Protein Powder from Grass Fed Cows - Low Carb, Low Calorie, Non-GMO, Lactose Free, Gluten Free, Sugar Free. Great for Weight Loss, 30 Servings (Cinnamon Cereal)
£0.06825 g£52.49930 g · 31 srvPowderIsolate4.5 (1.4k)Optimum Nutrition ON Gold Standard 100% Isolate Pure Whey Protein, Naturally Occurring BCAAs and Glutamine, Pre and Post Workout, Strawberry Flavour, 31 Servings, 930 g
£0.06724 g£24.25465 g · 15 srvPowderIsolate4.7 (2k)Optimum Nutrition Gold Standard 100% Whey Protein Powder, 465 g | Double Rich Chocolate, 15 Servings, 24 g Protein, BCAA, Low Sugar, Fast-Digesting Isolate, Supports Muscle Growth and Repair
~£0.065~27.4 g£41.16700 g · 23 srvPowderIsolate—Trec Nutrition - Isolate 100 700 Grams Jar Chocolate - CFM Whey Protein Isolate, Amino Acids, Ideal for Morning and After Training - 23 Servings
£0.06525 g£25.99500 g · 16 srvPowderIsolate4.3 (1.3k)Bulk Pure Whey Isolate 90, Vanilla, 500g | 25g Protein per Serving, Ultra-Filtered Whey Isolate, Low Sugar, Low Fat, Fast Absorption, Supports Muscle Maintenance
£0.06525 g£25.99500 g · 16 srvPowderIsolate4.2 (17)Bulk Pure Whey Isolate 90, Chocolate Malted Honeycomb, 500g | 25g Protein per Serving, Ultra-Filtered, Low Sugar, Low Fat, Fast Absorption, Supports Muscle Maintenance, High Protein Shake
£0.06423 g£14.76300 g · 10 srvPowderIsolate4.8 (8)Weider Whey Protein (300g) Vanilla Flavour, L-Glutamine Kyowa Quality | Whey Protein from Concentrate and Isolate, 23g/serving, With Digestive Enzymes and Stevia, No added Sugars, 10 servings
£0.06424 g£44.50896 g · 29 srvPowderIsolate4.6 (7.7k)Optimum Nutrition Gold Standard 100% Whey Protein Powder, 896 g | Cookies and Cream, 28 Servings, 24g Protein, BCAA, Low Sugar, Fast-Digesting Isolate, Supports Muscle Growth and Repair
£0.06324 g£44.08899 g · 29 srvPowderIsolate4.6 (56.9k)Optimum Nutrition Gold Standard 100% Whey Protein Powder, 899 g | Double Rich Chocolate, 29 Servings, 24 g Protein, BCAA, Low Sugar, Fast-Digesting Isolate, Supports Muscle Growth and Repair
£0.06325 g£25.20500 g · 16 srvPowderIsolate4.3 (1.8k)Bulk Pure Whey Protein Isolate, Unflavoured, 500 g
£0.06324 g£42.25896 g · 28 srvPowderIsolate4.6 (2.2k)Optimum Nutrition Gold Standard 100% Whey Protein Powder, 896 g | Chocolate Peanut Butter,28 Servings,24g Protein, BCAA, Low Sugar,Fast-Digesting Isolate,Supports Muscle Growth and Repair
£0.06224 g£49.991 kg · 33 srvPowderIsolate4.3 (1.3k)Bulk Pure Whey Protein Isolate Powder Shake, Vanilla, 1000 g
~£0.062~25 g£25.99500 g · 17 srvPowderIsolate4.2 (941)Bulk Pure Whey Isolate 90, Chocolate, 500g | 25g Protein per Serving, Ultra-Filtered Whey Isolate, Low Sugar, Low Fat, Fast Absorption, Supports Muscle Maintenance
£0.06225 g£35.80727 g · 23 srvPowderIsolate4.3 (90)MUTANT Hardcore ISO Whey Protein Isolate Powder Acts Fast to Help Recover, Build Muscle, Bulk and Strength, 727g - Vanilla Ice Cream
£0.06124 g£43.85900 g · 30 srvPowderIsolate4.6 (10.9k)Optimum Nutrition Gold Standard 100% Whey Protein Powder, 900 g | Delicious Strawberry, 30 Servings, 24g Protein, BCAA,Low Sugar, Fast-Digesting Isolate, Supports Muscle Growth and Repair
£0.05826 g£44.96900 g · 30 srvPowderIsolate5 (3)Per4m Isolate Zero Premium Whey Protein Powder | Superior Flavour Ultra Filtered + Amino Acids | Fast Absorbing Zero Sugar Gluten Free Shake for Lean Muscle & Recovery (900g, Banana Creme)
£0.05722 g£17.52420 g · 14 srvPowderIsolate5 (1)MaxiNutrition - MaxWhey - Isolate and Concentrate Protein Powder Blend, 22g Protein - No Artificial Colours & Flavours, Banoffee 420g - Low-Fat - Low Sugar - Gluten Free, 113 kcal per Serving
£0.05624 g£98.002.26 kg · 73 srvPowderIsolate4.6 (3.5k)Optimum Nutrition Gold Standard 100% Whey Protein Powder, 2.26 kg | Double Rich Chocolate, 73 Servings, 24 g Protein, BCAA, Low Sugar, Fast-Digesting Isolate, Supports Muscle Growth and Repair
£0.05627 g£49.661 kg · 33 srvPowderIsolate4.2 (318)PBN - Premium Body Nutrition - Whey-Isolate Protein Powder, 1kg, Strawberry - 33 Servings | 33 Servings, 26g Protein, Fast Mixing, Vegetarian, Gym Nutrition
~£0.056~27 g£49.991 kg · 33 srvPowderIsolate4.2 (941)Bulk Pure Whey Protein Isolate, Chocolate, 1 kg
~£0.055~27 g£44.90908 g · 30 srvPowderIsolate4.3 (411)BioTechUSA Iso Whey Zero | Premium Whey Protein Isolate | Grass-Fed | Enzyme-Free | Sugar- and Gluten-Free, 908 g, Banana
£0.05524 g£39.46900 g · 30 srvPowderIsolate4.6 (28.5k)Optimum Nutrition Gold Standard 100% Whey Protein Powder, 900 g | Vanilla Ice Cream, 30 Servings, 24 g Protein, BCAA, Low Sugar, Fast-Digesting Isolate, Supports Muscle Growth and Repair
£0.05424 g£97.982.27 kg · 75 srvPowderIsolate4.6 (2.4k)Optimum Nutrition Gold Standard 100% Whey Protein Powder, 2.27 kg | Extreme Milk Chocolate, 71 Servings, 24 g Protein, BCAA, Low Sugar, Fast-Digesting Isolate, Supports Muscle Growth and Repair
£0.05424 g£38.97900 g · 30 srvPowderIsolate4.6 (7k)Optimum Nutrition Gold Standard 100% Whey Muscle Building and Recovery Protein Powder with Naturally Occurring Glutamine and BCAA Amino Acids, Banana Cream Flavour, 30 Servings, 900 g | Banana Cream, 30 Servings, 24 g Protein, BCAA, Low Sugar, Fast-Digesting Isolate, Supports Muscle Growth and Repair
£0.05425 g£111.992.5 kg · 83 srvPowderIsolate4.3 (1.8k)Bulk Pure Whey Protein Isolate, Unflavoured, 2.5 kg
£0.05424 g£98.002.28 kg · 76 srvPowderIsolate4.7 (942)Optimum Nutrition Gold Standard 100% Whey Protein Powder, 2.28 kg | Vanilla Ice Cream, 76 Servings, 24 g Protein, BCAA, Low Sugar, Fast-Digesting Isolate, Supports Muscle Growth and Repair
£0.05425.5 g£21.90500 g · 16 srvPowderIsolate4.6 (3.6k)Scitec Nutrition 100% Whey Protein Professional - Whey Protein Complex | From concentrate and isolate - with digestive enzymes - for muscle building - 500 g, Chocolate
£0.05222 g£38.99850 g · 34 srvPowderIsolate4.3 (73)Applied Nutrition ISO-XP Whey Protein Isolate – Over 21g Protein, Low Carb, Low Fat, BCAA-Rich, Fast Absorption, Soy-Free, Halal-Certified (850g - 34 Servings) (Vanilla)
£0.05124 g£90.932.27 kg · 75 srvPowderIsolate4.3 (1.4k)PBN Premium Body Nutrition - Whey Isolate Protein Powder, Chocolate - 75 Servings, 2.27 kg (Pack of 1) | 33 Servings, 26g Protein, Fast Mixing, Vegetarian, Gym Nutrition
£0.05024 g£36.12930 g · 30 srvPowderIsolate4.4 (64)Optimum Nutrition Gold Standard 100% Whey Protein Powder, 930 g | Chocolate Orange, 30 Servings, 24 g Protein, BCAA, Low Sugar, Fast-Digesting Isolate, Supports Muscle Growth and Repair
£0.05025 g£74.991.8 kg · 60 srvPowderIsolate4.5 (23)Reflex Isolate Pro, Whey Isolate Protein Powder, Vanilla, 1.8kg | 83% protein with fast absorption. Low lactose, low fat and low sugar formula with 60 servings for muscle gain.
£0.04921 g£34.90850 g · 34 srvPowderIsolate4 (28)Applied Nutrition ISO-XP Whey Protein Isolate – Over 21g Protein, Low Carb, Low Fat, BCAA-Rich, Fast Absorption, Soy-Free, Halal-Certified (850g - 34 Servings) (Choco Bueno)
£0.04825 g£72.101.8 kg · 60 srvPowderIsolate4 (41)Reflex Isolate Pro, Whey Isolate Protein Powder, Chocolate, 1.8kg | 83% protein with fast absorption. Low lactose, low fat and low sugar formula with 60 servings for muscle gain.
£0.04722 g£74.891.8 kg · 72 srvPowderIsolate4.3 (71)Applied Nutrition ISO-XP Whey Protein Isolate – Over 21g Protein, Low Carb, Low Fat, BCAA-Rich, Fast Absorption, Soy-Free, Halal-Certified (1.8kg - 72 Servings) (Chocolate)
£0.04724 g£170.004.53 kg · 151 srvPowderIsolate4.5 (471)Optimum Nutrition Gold Standard 100% Whey Protein Powder, 4.53 kg | Vanilla Ice Cream, 151 Servings, 24 g Protein, BCAA, Low Sugar, Fast-Digesting Isolate, Supports Muscle Growth and Repair
£0.04725 g£68.002 kg · 58 srvPowderIsolate4.4 (563)USN BlueLab Whey Protein Powder I Vanilla I 2kg - 58 Servings | 25g Isolate Blend | 131kcal | 6.0g BCAAs | Soy-Free | Low Carb & Fat | Easy Digestion | Post-Workout | Lean Muscle Growth
£0.04621 g£69.901.82 kg · 72 srvPowderIsolate4 (9)Scitec Nutrition 100% Whey Isolate – Pure Protein Power with BCAAs – Glutamine & Arginine – Sugar & Gluten Free Formula, 1816 g, Chocolate
£0.04624 g£78.901.82 kg · 72 srvPowderIsolate4.4 (3k)BioTechUSA Iso Whey Zero | Premium Whey Protein Isolate | Grass-Fed | Enzyme-Free | Sugar- and Gluten-Free, 1816 g, Chocolate
£0.04525 g£79.552.27 kg · 71 srvPowderIsolate4.5 (23)MUTANT Hardcore ISO Whey Protein Isolate Powder Acts Fast to Help Recover, Build Muscle, Bulk and Strength, 2270g - Cookies & Cream
£0.04424 g£79.992.27 kg · 75 srvPowderIsolate4.6 (154)Bulk Informed Whey Protein Isolate Powder, Double Chocolate, 2.27 kg | Protein Shake with Added Digestive Enzymes
£0.04325 g£80.992.3 kg · 76 srvPowderIsolate4.5 (2k)ANIMAL Isolate Whey Protein Powder (Cookies and Cream) – with 25g Protein & 4.6g BCAAs for Muscle Building, Protein Shake with isolates & Various Amino acids – 2,3kg
£0.04225 g£69.992 kg · 66 srvPowderIsolate4.1 (10)DY Shadowhey Isolate Whey Protein Powder 2kg (Chocolate)
£0.04125 g£59.992 kg · 58 srvPowderIsolate4.4 (507)USN BlueLab Whey Protein Powder I Chocolate I 2kg - 58 Servings | 24g Isolate Blend | 129kcal | 5.5g BCAAs | Soy-Free | Low Carb & Fat | Easy Digestion | Post-Workout | Lean Muscle Growth
£0.04024 g£55.892 kg · 58 srvPowderIsolate4.8 (289)USN BlueLab Whey Protein Powder I Chocolate Caramel I 2kg - 58 Servings | 25g Isolate Blend | 131kcal | 6.0g BCAAs | Soy-Free | Low Carb & Fat | Easy Digestion | Post-Workout | Lean Muscle Growth
£0.04026 g£33.951 kg · 33 srvPowderIsolate5 (3)100% Whey Protein Powder 1kg – Pure Whey – 90% Protein Content | Ultra-clean whey isolate delivering 26g protein per serving with 90% protein content. Low sugar, low fat formula
£0.03826 g£32.951 kg · 33 srvPowderIsolate4.7 (10)100% Whey Protein Powder 1kg – Pure Whey – 90% Protein Content – 26g Protein per Serving – Low Fat, Low Sugar – Gluten Free, Aspartame Free – Vanilla Flavour | Ultra-clean whey isolate delivering 26g protein per serving with 90% protein content. Low sugar, low fat formula
£0.03725 g£61.342 kg · 66 srvPowderIsolate4.2 (30)DY Nutrition - Shadowhey Isolate Protein Powder 2kg | 25g Protein per Serving | 66 Servings | 7.3g of BCAAs | Cold Processing Filtered | Premium Absorption Lactose Free (Vanilla)
£0.03727 g£39.995 kg · 40 srvPowderIsolate4 (1.2k)The Bulk Protein Company, Serious Gainz - Vegetarian Whey Protein Powder - Weight Gain, Mass Gainer - 30g Protein (Vanilla, 5kg) | Mass Gainer, 40 Servings, 27g Protein, 460 kcal, Whey Isolate & Oat Flour, Weight Gain & Recovery (Vanilla)
£0.03627 g£64.992 kg · 66 srvPowderIsolate3 (1)EFECTIV Whey Protein Isolate 2kg Strawberry 27g Protein
£0.03621 g£54.492 kg · 71 srvPowderIsolate4.2 (4)Boditronics Express Whey Protein Powder Muscle Building Powder with Dietary Fibre, BCAA, and High Levels of L-Glutamine Prebiotic Mass Gainer Whey Protein Isolate Protein Shakes
£0.03623 g£62.452.27 kg · 75 srvPowderIsolate4.1 (19)DY Nutrition Whey Complex Tempro | x4 Protein Forms | Whey, Casein, Isolate & Egg Albumin, 23g Premium Protein Powder with Digestive Enzymes for Optimal Absorption, 2.27kg | Banana Ice Cream
£0.03526 g£59.992 kg · 67 srvPowderIsolate4 (6)Per4m Isolate Zero Premium Whey Protein Powder | Superior Flavour Ultra Filtered + Amino Acids | Fast Absorbing Zero Sugar Gluten Free Shake for Lean Muscle & Recovery (2kg, Vanilla Creme)
£0.03423 g£58.322.27 kg · 75 srvPowderIsolate4 (18)DY Nutrition Whey Complex Tempro | x4 Protein Forms | Whey, Casein, Isolate & Egg Albumin, 23g Premium Protein Powder with Digestive Enzymes for Optimal Absorption, 2.27kg | Vanilla Ice Cream Flavour
~£0.033~23 g£57.652.27 kg · 76 srvPowderIsolate3.8 (13)DY Nutrition Whey Complex Tempro | x4 Protein Forms | Whey, Casein, Isolate & Egg Albumin, 23g Premium Protein Powder with Digestive Enzymes for Optimal Absorption, 2.27kg | Chocolate Flavour
£0.02926 g£44.951.8 kg · 60 srvPowderIsolate2.4 (5)Applied Nutrition BodyFuel Protein Isolate Powder – 26g Protein, Whey & Milk Protein Isolate for Muscle Growth & Recovery, Low Sugar Easy Mix Protein Shake (1.8kg – 60 Servings) (Double Chocolate)
£0.02424 g£75.454 kg · 133 srvPowderIsolate4.2 (5)Boditronics XTR-4 Protein Powder is Protein Supplement with Whey Protein Concentrate, Micellar Casein, Soy Protein Isolate in High Glutamine and Amino Acids (Rich Chocolates, 4 kg)
£0.01634 g£69.995 kg · 125 srvPowderIsolate3.8 (116)Nutrisport Whey Protein Isolate Chocolate 5Kg
~£0.016~27 g£69.995 kg · 167 srvPowderIsolate3.7 (22)Nutrisport Whey Protein Isolate Strawberr 5000g
—15 g£17.31—BarsIsolate4.3 (168)Myprotein Crispy Protein Wafers | 15g Protein | Box of 10 | Chocolate | High Protein Snack Bar | Milk & Whey Isolate | Low Sugar