10 Best Weight Gain Protein Powder 1kg in The UK
Last updated on 13/09/2025
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Best Choice
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Kinetica Sports Whey Protein Powder - Vanilla Flavour | 23g Protein/Serve, 33 Servings/1Kg Pack | Gluten Free Supplement | Optimum for Muscle Growth & Recovery | Mixes Well with Water, Milk & Shakes
Kinetica
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Kinetica
Kinetica Sports Whey Protein Powder - Vanilla Flavour | 23g Protein/Serve, 33 Servings/1Kg Pack | Gluten Free Supplement | Optimum for Muscle Growth & Recovery | Mixes Well with Water, Milk & Shakes
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Why We Love It
- Unrivalled taste and smooth texture.
- High quality, grass-fed protein.
- Maintains and enhances strength.
Main Highlights
- Premium Protein Powder for Optimal Nutrition: Indulge in the rich, smooth Vanilla flavour of Kinetica Sport’s whey protein powder. With 23g of high-quality protein per serving, our grass-fed whey and isolate blend supports your overall health and performance but especially when it comes to lean muscle retention, repair and growth. Available in a selection of delicious flavours to suit every taste.
- Health Benefits for Lean Muscle & Recovery: At just 117 kcal per serving, Kinetica’ Sports protein powder helps to build and maintain lean muscle. With 23g delicious, high quality Protein per serving, Kinetica Sports Whey is the ideal suypplement whether you're looking to add a convenient source of protein to your diet, managing energy intake for weight loss, or looking to support lean muscle retention, repair and growth.
- Serving Size & Packaging Details: Each 1kg pack provides 33 servings of Kinetica Sports whey protein powder, delivering 23g of protein per 30g scoop. Simply mix with water, milk, or a shake, and enjoy up to 3 servings daily. Perfect for your fitness journey.
- Easy to Use for Maximum Results: For an effortless protein shake, mix 1 scoop (30g) with 170-200ml of water or milk. Stir or shake until smooth and creamy. Add to smoothies or recipes for an easy boost of protein. Kinetica Sports fits your active lifestyle.
- Certified Quality, Safe for Athletes: Kinetica Sport’s whey protein is batch-tested under the Informed-Sport program, ensuring it meets WADA standards for quality and safety. Gluten-free and with no added sugar, it’s ideal for those seeking clean, high-quality supplements for muscle building, weight loss, and optimum nutrition.
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Value for Money
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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
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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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Applied Nutrition ISO-XP Whey Protein Powder – 22g Protein, Low Fat, Low Carb Whey Isolate Protein Powder, Rich in Amino Acids, Grass-Fed, Soy Free, Halal Certified (1kg - 40 Servings) (Strawberry)
Applied Nutrition
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Applied Nutrition
Applied Nutrition ISO-XP Whey Protein Powder – 22g Protein, Low Fat, Low Carb Whey Isolate Protein Powder, Rich in Amino Acids, Grass-Fed, Soy Free, Halal Certified (1kg - 40 Servings) (Strawberry)
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Why We Love It
- High-quality protein source.
- Low in calories and sugar.
- Halal certified for inclusivity.
Main Highlights
- Purest Whey Protein: ISO-XP is an advanced whey isolate protein powder that offers 22g of high-quality protein per 25g serving and is packed with essential amino acids.
- Only 92 Calories per serving. Perfect for fitness enthusiasts, it’s low in fat, carbs, and sugar, helping maintain muscle mass without the extra calories.
- Grass-Fed Source and Soy-Free: Our whey protein isolate comes from grass-fed cows, ensuring you get a premium protein shake. Also ISO-XP uses sunflower lecithin as an emulsifier, making it a soy-free protein isolate.
- Halal Certified: ISO-XP whey protein isolate is Halal certified, making it accessible to a broader audience. Enjoy our all the delicious flavours, knowing you’re consuming whey protein powder that meets your dietary needs.
- Tested for Athletes: Every ingredient within this product is a carefully selected and monitored through our quality management system to bring you the highest level of assurance.
- Delicious Flavours to Suit Every Taste - Available in Choco Honeycomb, Choco Caramel, Choco Peanut, Vanilla, Strawberry, Banana, Cafe Latte, and more, offering great taste with premium nutrition.
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Kinetica Sports OatGain Weight Gainer - Chocolate Caramel Flavour | 620 Cal, 47g Protein & 78g Carbs/Serve, 15 Serving/2.4Kg | Optimum Grass Fed Protein Supplement | High Calorie & Easy Mixability
Kinetica
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Kinetica
Kinetica Sports OatGain Weight Gainer - Chocolate Caramel Flavour | 620 Cal, 47g Protein & 78g Carbs/Serve, 15 Serving/2.4Kg | Optimum Grass Fed Protein Supplement | High Calorie & Easy Mixability
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Why We Love It
- Delicious Chocolate Caramel Nut.
- Easy to mix.
- Repairs muscles, replenishes energy.
Main Highlights
- Irresistible Flavour for Maximum Enjoyment: Kinetica Sports OatGain Mass Gainer comes in two mouthwatering flavours: Chocolate Caramel Nut and Raspberry Yoghurt. Each delivers a rich, satisfying taste and aroma, making it easy and enjoyable to fuel your body with extra calories and nutrients to support high training loads.
- Smooth & Easy Mixability: Experience hassle-free mixing with Kinetica Sports OatGain Weight Gainer. Whether you prefer water, milk, or milk alternatives, our mass gainer powder mixes easily with milk or water for a high protein, high calorie shake in seconds.
- High-Calorie Fuel for Muscle & Energy: Each serving of Kinetica Sports OatGain mass gainer provides 600+ calories and 46g of protein to help you gain weight, increase overall muscle mass and replenish your energy stores, making it ideal for intense workouts and recovery. Kinetica Sports Oatgain mass gainer contains only 6.4g of sugar per serving.
- Convenient & Versatile for Any Lifestyle: Kinetica OatGain weight gainer is perfect for anyone looking to intake a high volume of calories for weight gain or energy regeneration. It’s suitable for vegetarians and can be used as a post-workout shake, meal replacement, or mid-day snack. Simply mix one serving with water, milk, or your preferred beverage for a quick and nutritious option.
- Quality Assured & Batch-Tested for Safety: Kinetica Sports OatGain mass gainer is batch-tested under the Informed-Sport testing program to ensure that every batch complies with WADA’s high standards. You can trust that OatGain is free from banned substances and made with quality ingredients to fuel your training safely and effectively.
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Bulk Pure Whey Protein Powder Shake, Strawberry, 1 kg, Packaging May Vary
Bulk
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Bulk
Bulk Pure Whey Protein Powder Shake, Strawberry, 1 kg, Packaging May Vary
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Why We Love It
- Award-winning protein shake for training.
- Packed with essential proteins, BCAAs.
- Low in sugar and fat.
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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Millidose 1kg unflavoured Protein Powder - unflavoured whey Protein Powder Perfect for a high Protein Shake or Snack - whey Nutrition for Building Muscle - 38g of Protein per Serving
Millidose
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Millidose
Millidose 1kg unflavoured Protein Powder - unflavoured whey Protein Powder Perfect for a high Protein Shake or Snack - whey Nutrition for Building Muscle - 38g of Protein per Serving
4% OffFree Shipping
Why We Love It
- Ideal for calorie-controlled diets.
- Promotes muscle growth, aids recovery.
- Versatile usage and delicious taste.
Main Highlights
- High Protein Powerhouse Packed with 42g of protein per serving and less than 2.5g sugar, this unflavoured protein powder is the perfect ingredient for your high protein shakes, smoothies, or snacks. It’s designed to increase muscle building, recovery, and strength for athletes and gym enthusiasts at any fitness level.
- Macros Tailored to Your Goals This whey protein powder is low in carbs, sugar, and fat, with less than 2.5g of sugar and 1.75g of fat per serving. This makes it ideal for calorie-controlled diets, it’s the ultimate choice for lean muscle growth, minimal weight gain, or as a diet whey protein powder for your active lifestyle.
- Versatile & Tasteless for Endless Uses Millidose’s unflavoured whey protein powder mixes effortlessly with water, milk, or your favorite recipes without altering the taste like other brands. Create a creamy high protein coffee, or upgrade meals and snacks to become delicious protein-packed snacks for any time of day.
- Supports Any Fitness Journey Whether you’re looking for a weight gainer for skinny people, enhancing lean muscle, or using a diet protein powder for weight loss, Millidose provides clean and effective nutrition. It’s your perfect partner for recovery, strength, and long-term health goals.
- Pure Ingredients, Maximum Results Unlike other brands, this whey nutrition protein powder contains no added sweeteners or artificial ingredients. Crafted to deliver clean, high-quality protein supplements, it’s perfect for anyone seeking reliable results without compromise and have already had gread feedback from our returning customers who have made the switch over to Millidose.
- Ideal for Gifting or Building a Hamper Millidose is a thoughtful gift for fitness enthusiasts or anyone on a health journey. Include it in a protein hamper, or try our other flavors like vanilla protein powder and chocolate protein powder. Don’t forget to check out Millibites, our high-protein snacks!
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GN Creatine Powder | 1kg High Strength Creatine Monohydrate Powder - 5g per Serving | Unflavoured Filler Free Creatine-Monohydrate | Non-GMO & Gluten Free
Gains Nutrition
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Gains Nutrition
GN Creatine Powder | 1kg High Strength Creatine Monohydrate Powder - 5g per Serving | Unflavoured Filler Free Creatine-Monohydrate | Non-GMO & Gluten Free
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Why We Love It
- Fuels rapid muscle growth.
- Enhances strength and endurance.
- Ensures purity and potency.
Main Highlights
- Our Creatine Monohydrate Powder is made from the highest quality ingredients, ensuring purity and potency. Each serving provides a precise dosage of 5 grams of pure creatine monohydrate, the most researched and trusted form of creatine available. This ensures that you’re getting the optimal amount of this powerful compound to fuel your muscles and promote rapid muscle growth.
- Creatine monohydrate works by replenishing your body’s ATP (adenosine triphosphate) stores, which are responsible for providing the energy required for muscular contractions during intense workouts. By increasing ATP availability, our Creatine Monohydrate Powder helps you train harder, lift heavier weights, and experience greater endurance, leading to improved strength gains and enhanced muscle performance.
- Our powder is easy to mix, with a convenient scoop included in each container for accurate dosing. Simply add a scoop to your favorite beverage, such as water or a protein shake, and mix until fully dissolved. It’s flavorless and odorless, ensuring a seamless integration into your daily routine without any unpleasant aftertaste.
- Not only does our Creatine Monohydrate Powder deliver exceptional performance benefits, but it’s also backed by extensive scientific research and rigorous quality standards. We prioritize your safety and ensure that our product is free from fillers, additives, and unnecessary ingredients. It’s also manufactured in a state-of-the-art facility that follows strict Good Manufacturing Practices (GMP) to guarantee purity, potency, and consistency in every batch.
- Whether you’re an athlete striving for peak performance, a bodybuilder looking to increase muscle mass, or simply someone who wants to take their fitness journey to the next level, our Creatine Monohydrate Powder is the ideal supplement to support your goals. Experience the power of creatine and unlock your full potential with our premium-grade formula. Order your supply today and unleash the strength within!
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Whey Protein Concentrate Powder - Unflavoured | Grass Fed | Packaging May Vary (1Kg)
Peak Supps
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Peak Supps
Whey Protein Concentrate Powder - Unflavoured | Grass Fed | Packaging May Vary (1Kg)
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Why We Love It
- Superior production supports muscle gain.
- Enriched with essential amino acids.
- Promotes quick muscle recovery.
Main Highlights
- Produced with superior Sunflower Lecithin by one of Europe's leading whey protein suppliers.
- Naturally high in BCAA's & Glutamine with an excellent amino acid profile.
- High biological value protein, supports muscle gain and recovery.
- Naturally high in BCAA's & Glutamine with an excellent amino acid profile.
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Amazon Brand - Amfit Nutrition Whey Protein Powder, Chocolate Flavour, 33 Servings, 1 kg (Pack of 1)
Amfit Nutrition
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Amfit Nutrition
Amazon Brand - Amfit Nutrition Whey Protein Powder, Chocolate Flavour, 33 Servings, 1 kg (Pack of 1)
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Why We Love It
- Supports muscle growth and maintenance.
- Ideal for vegetarian diet.
- Eco-friendly, recyclable packaging.
Main Highlights
- PBN Whey Protein Powder Chocolate 1kg Pouch
- Each serving contains 23.0g of Protein
- Premium Quality ingredients
- Suitable for Vegetarians
- Each Pack contains 33 Servings
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PBN - Premium Body Nutrition Whey Protein Powder 1kg Cookies
Premium Body Nutrition
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Premium Body Nutrition
PBN - Premium Body Nutrition Whey Protein Powder 1kg Cookies
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Why We Love It
- Protein-packed with delicious flavor.
- Ideal for vegetarians.
- Generous serving count.
Main Highlights
- PBN Whey Protein Powder Cookies & Cream 1kg Pouch
- Each serving contains 23.4g of Protein
- New Improved flavour
- Suitable for Vegetarians
- Each Pack contains 33 Servings
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