10 Best Whey Protein Powder Bulk in The UK
Last updated on 08/09/2025
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Optimum Nutrition Gold Standard 100% Whey Muscle Building and Recovery Protein Powder With Naturally Occurring Glutamine and BCAA Amino Acids, Double Rich Chocolate Flavour, 73 Servings, 2.26 kg
Optimum Nutrition
14% OffFree Shipping
Optimum Nutrition
Optimum Nutrition Gold Standard 100% Whey Muscle Building and Recovery Protein Powder With Naturally Occurring Glutamine and BCAA Amino Acids, Double Rich Chocolate Flavour, 73 Servings, 2.26 kg
14% OffFree Shipping
Why We Love It
- Supports fitness journey from start.
- Assists in muscle gain, recovery.
- Variety of flavors 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
Value for Money
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SERIOUS Protein – Protein Powder – 4kg – Low Carb – Supports Lean Muscle Growth – Recovery Supplement - The Bulk Protein Company - 133 Servings (Banana)
The Bulk Protein Company
20% OffFree Shipping
The Bulk Protein Company
SERIOUS Protein – Protein Powder – 4kg – Low Carb – Supports Lean Muscle Growth – Recovery Supplement - The Bulk Protein Company - 133 Servings (Banana)
20% OffFree Shipping
Why We Love It
- Promotes muscle growth and recovery.
- Tastes great with various recipes.
- Long lasting value pack.
Main Highlights
- ✅ 24g PROTEIN PER SERVING TO BUILD LEAN MUSCLE - A convenient way to help meet your daily protein needs. Use after training to quickly heal micro-tears in muscle tissues, speed up recovery and reduce muscle soreness for STRONGER and BIGGER muscles over time.
- ✅ HIGH PROTEIN, LOW CALORIES, LOW CARBS - Only 114 Calories Per Serving! Serious Protein powder is 80% Protein with Low Carbs, Sugars, and Fats. Ideal for adding LEAN MASS! Perfect to use as a meal replacement or part of a calorie-controlled diet, while trying to lean out, or for those simply looking to support MUSCLE GAINS.
- ✅ HIGH QUALITY INGREDIENTS - Premium blend of Whey Protein Concentrate, Micellar Casein and Soy Protein Isolate, a combination of slow and fast releasing proteins for total protein synthesis throughout the day. Also contains GLUTAMINE PEPTIDE, essential for muscle recovery and more bioavailable than regular glutamine, helping aid MUSCLE GROWTH.
- ✅ PROTEIN SHAKE THAT TASTES GREAT - Add 1 rounded scoop (30g) to 250ml of cold water or skimmed milk and shake well to create a great tasting Protein Shake! Can also be enjoyed in smoothies, with oats or when added to a pancake mix. For best results consume 1 serving (30g) one to three times per day
- ✅ EXCELLENT VALUE - More than 6 weeks supply in one tub, when following our recommended servings. Comes with scoop for measurements.
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The Bulk Protein Company, SERIOUS GAINZ - Whey Protein Powder - Weight Gain, Mass Gainer - 30g Protein Powders (Chocolate, 5kg)
The Bulk Protein Company
13% OffFree Shipping
The Bulk Protein Company
The Bulk Protein Company, SERIOUS GAINZ - Whey Protein Powder - Weight Gain, Mass Gainer - 30g Protein Powders (Chocolate, 5kg)
13% OffFree Shipping
Why We Love It
- Builds muscle with high protein.
- Promotes mass gain effectively.
- Offers excellent value for money.
Main Highlights
- 30g PROTEIN PER SERVING TO HELP BUILD MUSCLE - Protein Isolate powder that contains 30 grams of high quality Protein per serving. A convenient and easy way to help you meet your daily protein needs. Use after training to quickly heal micro-tears in muscle tissues, which speeds up recovery, reduces muscle soreness and leads to stronger and bigger muscles over time.
- PUT ON SIZE AND GAIN MASS - With 468 lean calories per serving, Serious Gainz protein powder is ideal when BULKING. Use as part of a balanced diet to help add body mass and increase weight gain. Contains 81g of carbohydrates which will help your body absorb the protein within, turning it into muscle mass to help towards improving your overall body composition.
- PROTEIN SHAKE THAT TASTES GREAT - Add 3 scoops of powder to 400-500ml of water or milk and mix well to create a great tasting Protein Shake! Can also be enjoyed in smoothies, with oats or when added to a pancake mix. Protein powders don't have to be boring, so we made 10 different flavours for you to choose from.
- HIGH QUALITY WHEY PROTEIN - Whey digests quickly and is rich in branched-chain amino acids (BCAAs). One of these BCAAs, Leucine, plays a major role in promoting muscle growth and recovery after resistance and endurance exercise. When amino acids are digested and absorbed into your bloodstream, they become available for muscle protein synthesis, which is the creation of new muscle.
- EXCELLENT VALUE 5kg TUB WITH 40 SERVINGS - With up to a month's supply of high quality protein powder, we offer great value for your money compared with other brands. We recommend one serving per day to consistently meet your daily protein goal. Consume immediately post-training on workout days and between breakfast and lunch on non-workout days. Comes with scooper for measurements.
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Serious Shredz 4kg – Diet Whey Protein Powder – Contains L-Carnitine L-Tartrate and Green Tea Extract – Supports Lean Muscle Growth, 133 Servings – The Bulk Protein Company (Strawberry)
The Bulk Protein Company
18% OffFree Shipping
The Bulk Protein Company
Serious Shredz 4kg – Diet Whey Protein Powder – Contains L-Carnitine L-Tartrate and Green Tea Extract – Supports Lean Muscle Growth, 133 Servings – The Bulk Protein Company (Strawberry)
18% OffFree Shipping
Why We Love It
- Great value for diet protein.
- Protein-loaded with minimal carbs.
- Delicious high-fiber shake.
Main Highlights
- ✅ SERIOUS SHREDZ – Here at The Bulk Protein Company we're serious about value. We're serious about creating the UK's number 1, lean diet protein powder at a fair and affordable price.
- ✅ PROTEIN & SERVINGS – 21g of high-quality protein in every scoop & a huge 133 Servings per 4kg tub!
- ✅ INGREDIENTS – Contains L-Carnitine, L-Tartrate, and Green Tea extract! An incredible 70% protein, with ultra-low carbs, sugars and high in fibre!
- ✅ TASTE – Serious Shredz is delicious and makes for a tasty any time of the day meal replacement or diet friendly post workout recovery shake. If you're serious about training, Serious Shredz is for you.
- ✅ PREP – For best results consume 1 serving (30g) one to three times per day. Simply add 1 rounded scoop (30g) to 250ml of cold water or skimmed milk, shake well and enjoy.
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Bulk Pure Whey Protein Powder Shake, Vanilla, 1 kg, Packaging May Vary
Bulk
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Bulk
Bulk Pure Whey Protein Powder Shake, Vanilla, 1 kg, Packaging May Vary
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Why We Love It
- Award-winning for everyday training.
- Packed with essential proteins.
- Delicious low-sugar 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.
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Bulk Pure Whey Protein Powder | Blond Chocolate | 22g Protein and 5g BCAAs per Scoop | Whey Concentrate Shake | Low Sugar | Supports Muscle Growth and Repair | Smooth Mixing | Vegetarian | 1kg
Bulk
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Bulk Pure Whey Protein Powder | Blond Chocolate | 22g Protein and 5g BCAAs per Scoop | Whey Concentrate Shake | Low Sugar | Supports Muscle Growth and Repair | Smooth Mixing | Vegetarian | 1kg
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Why We Love It
- Award-winning protein for training.
- High protein and BCAAs boost.
- Low sugar for healthy choices.
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.
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Bulk Clear Whey Isolate | Blue Raspberry | 20g Protein per Serving | Low Sugar | Refreshing Fruity Flavours | 86 Calories | Fast Absorbing | Hydrating Protein Drink | 500g
Bulk
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Bulk
Bulk Clear Whey Isolate | Blue Raspberry | 20g Protein per Serving | Low Sugar | Refreshing Fruity Flavours | 86 Calories | Fast Absorbing | Hydrating Protein Drink | 500g
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Why We Love It
- Fresh alternative to creamy shakes.
- Fast absorption with hydrolysed protein.
- Perfect low sugar training partner.
Main Highlights
- Provides 20g of fast-absorbing whey protein isolate per serving, delivering essential amino acids to support muscle growth, repair, and lean muscle maintenance.
- Crafted with low sugar content and just 86 calories per serving, making it ideal for those following calorie-controlled or balanced nutrition plans.
- Available in a range of naturally inspired fruity flavours that provide a refreshing and enjoyable alternative to traditional protein shakes.
- Formulated to mix quickly and smoothly with water, this hydrating protein drink is perfect for on-the-go nutrition and supports post-workout hydration needs.
- Perfect for pre- or post-workout supplementation or as a convenient protein boost throughout the day, helping you stay on track with your fitness and wellness goals.
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Optimum Nutrition Gold Standard 100% Whey Muscle Building and Recovery Protein Powder With Naturally Occurring Glutamine and BCAA Amino Acids, Extreme Milk Chocolate Flavour, 28 Servings, 896 g
Optimum Nutrition
18% OffFree Shipping
Optimum Nutrition
Optimum Nutrition Gold Standard 100% Whey Muscle Building and Recovery Protein Powder With Naturally Occurring Glutamine and BCAA Amino Acids, Extreme Milk Chocolate Flavour, 28 Servings, 896 g
18% OffFree Shipping
Why We Love It
- Supports muscle gain and recovery.
- Low in sugar and fat.
- Variety of flavors 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
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Bulk Hydrolysed Whey Protein Isolate, Protein Shake, Unflavoured, 500 g, Packaging May Vary
Bulk
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Bulk
Bulk Hydrolysed Whey Protein Isolate, Protein Shake, Unflavoured, 500 g, Packaging May Vary
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Why We Love It
- Absorbs faster for immediate action.
- Packed with high protein content.
- Optimized for top-level training.
Main Highlights
- A fast-absorbing whey protein formula
- Packed with at least 24 g protein and 5 g BCAA per serving
- This high-performing supplement absorbs faster than standard proteins, reaching your muscles in record time
- With minimal sugar and fat, this is a winning formula for top-level training
- Choose your flavour or keep it simple with Unflavoured
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Bulk Pure Whey Protein Powder | Chocolate Malted Honeycomb | 22g Protein and 5g BCAAs per Scoop | Whey Shake | Low Sugar | Supports Muscle Growth and Repair | Smooth Mixing | Vegetarian | 1kg
Bulk
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Bulk
Bulk Pure Whey Protein Powder | Chocolate Malted Honeycomb | 22g Protein and 5g BCAAs per Scoop | Whey Shake | Low Sugar | Supports Muscle Growth and Repair | Smooth Mixing | Vegetarian | 1kg
Free Shipping
Why We Love It
- Award-winning protein shake.
- Low in sugar.
- Delicious range of flavors.
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.