We Chose The Best Whey Isolate Protein Powder 5kg in The UK - 10/2025

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 (Salted Caramel)

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 (Salted Caramel)

The Bulk Protein Company

Why we love it

Affordable, high-quality protein supplement.
Delicious, convenient meal replacement.
Low-carb, fiber-rich ingredients.

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 – SOY Protein Isolate, Glutamine Peptides (WHEAT), Chicory insulin, Maltodextrin, MILK protein concentrate (MILK), Flavoring, Green Tea Extract, MCT Oil Powder, Salt, L-Carnitine, L-Tartrate, Sweetner (Sucrolose) | For Allergens please ingredients in CAPITALS. May contain MILK, EGG, GLUTEN, SOYA, NUTS and PEANUTS
✅ 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

8.7

Excellent

8.7

Excellent

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 (Salted Caramel)

Why we love it

Affordable, high-quality protein supplement.
Delicious, convenient meal replacement.
Low-carb, fiber-rich ingredients.

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 – SOY Protein Isolate, Glutamine Peptides (WHEAT), Chicory insulin, Maltodextrin, MILK protein concentrate (MILK), Flavoring, Green Tea Extract, MCT Oil Powder, Salt, L-Carnitine, L-Tartrate, Sweetner (Sucrolose) | For Allergens please ingredients in CAPITALS. May contain MILK, EGG, GLUTEN, SOYA, NUTS and PEANUTS
✅ 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

We scanned 1024 products

We reviewed these offers relevant to the Whey Isolate Protein Powder 5kg 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 Bodybuilding Warehouse, Optimum Nutrition, Dymatize, Nutrisport, The Bulk Protein Company, all of which have a reputation for consistently delivering high-quality products that users love and innovative approaches for function & design.

For the best Whey Isolate Protein Powder 5kg in the market, we considered we took a deep dive into 5121 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 Bodybuilding Warehouse, Pure Whey Protein Isolate 95 - Chocolate Peanut Butter - 5kg. We love many things about this product by Bodybuilding Warehouse. What sets it apart from the competition is Ultra low fat content, High in protein, Delicious flavor options.

The best value product for most shoppers and where user satisfaction is continuously the highest is Optimum Nutrition Gold Standard 100% Whey Muscle Building and Recovery Protein Powder With Naturally Occurring Glutamine and BCAA Amino Acids, Delicious Strawberry Flavour, 151 Servings, 4.53 kg by Optimum Nutrition based on online reviews by bloggers, experts and online shoppers.

The biggest bargain at the moment for Whey Isolate Protein Powder 5kg and the best cost-to-value ratio 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 kgat Optimum Nutrition with a 6% discount.

Our list of the best Whey Isolate Protein Powder 5kg 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.

Best Whey Isolate Protein Powder 5kg of 2025

We scanned 1024 products

We concluded that: