Mutant Whey and Warrior Whey are two whey concentrates that sit at the budget end of the UK protein market. Both brands have built loyal followings - Mutant through its bold, gym-culture branding, Warrior through its direct-to-consumer model and sponsorship deals. But when you strip away the branding, which product actually delivers better value per gram of protein?
This comparison uses real nutrition data and current UK pricing to answer that question. No hype, no sponsorships - just the numbers that matter when you are choosing your next tub.
The products at a glance
Mutant Whey is the flagship protein from Mutant, a Canadian supplement brand best known for its mass gainers and pre-workouts. The Whey formula is a straightforward whey concentrate that comes in a 908g tub with a handful of flavours. Mutant positions itself firmly in the hardcore gym market - oversized packaging, aggressive branding, and a focus on size and strength.
Warrior Whey comes from Warrior, a UK-based brand that sells directly through its own website (teamwarrior.com) and Amazon. The brand has grown rapidly through social media and sponsorships with UK fitness influencers. Warrior Whey is a whey concentrate available in a range of dessert-inspired flavours, and the brand frequently runs promotions on multi-buy bundles.
Both products target budget-conscious gym-goers who want a no-frills whey concentrate without paying premium prices. On the surface they look similar - but the nutrition labels tell a different story.
Price comparison
At first glance, both products sit in a similar price band. Neither is as cheap as Myprotein Impact Whey during a sale, but both undercut premium brands like Optimum Nutrition significantly. You can typically find either product for around £2.00-£2.50 per 100g at full price.
However, price per 100g of powder is not the metric that matters most. What you really want to know is the cost per 25g of actual protein - because not all protein powders are created equal. A product with 59g of protein per 100g requires you to use significantly more powder per serving than one with 71g per 100g. That means you go through the tub faster, and the real cost is higher than the sticker price suggests.
When you calculate cost per 25g of protein, Warrior Whey consistently comes out ahead. You need less powder per serving to hit your protein target, which means each tub lasts longer. For live pricing across UK retailers, check the whey concentrate comparison table.
Protein content and nutrition
This is where the comparison gets interesting - and where the gap between these two products becomes clear.
Warrior Whey delivers 71.20g of protein per 100g of powder. That is a strong number for a whey concentrate, putting it in line with products like Myprotein Impact Whey (72g/100g) and Bulk Pure Whey (71g/100g). It means roughly 71% of the powder you are consuming is actual protein.
Mutant Whey delivers just 59.46g of protein per 100g. That is a significant drop - nearly 12g less protein per 100g of powder. The remaining powder is made up of carbohydrates, fats, and fillers. In practical terms, this means you need to use about 20% more Mutant Whey powder to get the same amount of protein as Warrior Whey.
To put this in perspective: if you use 30g of powder per shake, you get roughly 21g of protein from Warrior Whey but only 18g from Mutant Whey. Over a month of daily shakes, that difference adds up to roughly 90g of missed protein - almost four extra servings you would need to make up from somewhere else.
Warrior Whey Protein
500g bag
High-purity whey concentrate from Warrior with 71g protein per 100g. Frequently discounted — check current sale price.
See cheapest price →Warrior Whey Protein
500g bag
High-purity whey concentrate from Warrior with 71g protein per 100g. Frequently discounted — check current sale price.
See cheapest price →Quick verdict
Pros
- + 71g protein per 100g well above average
- + Low fat and sugar per serving
- + Frequent sales up to 58% off RRP
- + 4.3 Trustpilot rating fast delivery
Cons
- – Full RRP is premium priced
- – Limited to 3 flavour options
- – Only available direct or Amazon UK
Quick verdict
Pros
- + 71g protein per 100g well above average
- + Low fat and sugar per serving
- + Frequent sales up to 58% off RRP
- + 4.3 Trustpilot rating fast delivery
Cons
- – Full RRP is premium priced
- – Limited to 3 flavour options
- – Only available direct or Amazon UK
Mutant Whey 908g Powder
908g bag
Grass-fed, Informed-Choice certified whey from Mutant. Lower protein density at 59g/100g but clean ingredient profile.
See cheapest price →Mutant Whey 908g Powder
908g bag
Grass-fed, Informed-Choice certified whey from Mutant. Lower protein density at 59g/100g but clean ingredient profile.
See cheapest price →Quick verdict
Pros
- + 100% grass-fed whey certified
- + Added digestive enzymes for absorption
- + Informed-Choice tested IOC compliant
- + No aspartame or GMO ingredients
Cons
- – Only 59g protein per 100g low purity
- – Dual-chamber gimmick limits flavours
- – Often out of stock in the UK
Quick verdict
Pros
- + 100% grass-fed whey certified
- + Added digestive enzymes for absorption
- + Informed-Choice tested IOC compliant
- + No aspartame or GMO ingredients
Cons
- – Only 59g protein per 100g low purity
- – Dual-chamber gimmick limits flavours
- – Often out of stock in the UK
Taste and mixability
Both products mix adequately in a standard shaker, though neither is as smooth as a premium isolate. Expect a slightly thicker texture typical of whey concentrates.
Warrior Whey has a broader flavour range, with dessert-inspired options like White Chocolate, Strawberry Cheesecake, and Salted Caramel. The flavours tend to be sweet - sometimes overly so - but the variety gives you more to choose from. Warrior frequently releases limited-edition flavours, which keeps things interesting.
Mutant Whey offers a smaller selection, with standard options like Chocolate, Vanilla, and Cookies & Cream. The flavours are decent but unremarkable - they do the job without standing out. Mixability is fine with water but can be slightly gritty compared to higher-protein-density powders.
Neither product is going to win taste awards against Gold Standard or Applied Nutrition ISO-XP, but both are perfectly acceptable for a daily budget shake.
Where to buy in the UK
Warrior Whey is available direct from teamwarrior.com, on Amazon UK with Prime delivery, and through selected supplement retailers. Warrior often runs bundle deals on its own site - buying two or three tubs together can bring the per-tub price down significantly.
Mutant Whey is not sold direct by Mutant in the UK. You will find it on Amazon UK and through supplement retailers like Bodybuilding Warehouse and various eBay sellers. Availability can be inconsistent, and the flavour selection in UK-stocked listings tends to be limited compared to what is available in North America.
For both products, Amazon UK tends to offer the most reliable stock and competitive pricing. Check the WheyWise comparison table for the latest prices across all UK retailers.
The verdict
This one is straightforward. Warrior Whey is the better product on the metric that matters most - protein density.
Choose Warrior Whey if you want more protein per scoop and better value per gram of protein. With 71g of protein per 100g, it delivers a protein concentration in line with the best budget concentrates on the market. The wider flavour range and direct UK availability through teamwarrior.com are additional advantages.
Warrior Whey Protein
500g bag
High-purity whey concentrate from Warrior with 71g protein per 100g. Frequently discounted — check current sale price.
See cheapest price →Warrior Whey Protein
500g bag
High-purity whey concentrate from Warrior with 71g protein per 100g. Frequently discounted — check current sale price.
See cheapest price →Quick verdict
Pros
- + 71g protein per 100g well above average
- + Low fat and sugar per serving
- + Frequent sales up to 58% off RRP
- + 4.3 Trustpilot rating fast delivery
Cons
- – Full RRP is premium priced
- – Limited to 3 flavour options
- – Only available direct or Amazon UK
Quick verdict
Pros
- + 71g protein per 100g well above average
- + Low fat and sugar per serving
- + Frequent sales up to 58% off RRP
- + 4.3 Trustpilot rating fast delivery
Cons
- – Full RRP is premium priced
- – Limited to 3 flavour options
- – Only available direct or Amazon UK
Choose Mutant Whey if you are specifically loyal to the Mutant brand or find it on a deep discount. At 59g of protein per 100g, the protein density is below average for a whey concentrate, which means you are paying more per gram of actual protein even if the sticker price looks competitive.
Mutant Whey 908g Powder
908g bag
Grass-fed, Informed-Choice certified whey from Mutant. Lower protein density at 59g/100g but clean ingredient profile.
See cheapest price →Mutant Whey 908g Powder
908g bag
Grass-fed, Informed-Choice certified whey from Mutant. Lower protein density at 59g/100g but clean ingredient profile.
See cheapest price →Quick verdict
Pros
- + 100% grass-fed whey certified
- + Added digestive enzymes for absorption
- + Informed-Choice tested IOC compliant
- + No aspartame or GMO ingredients
Cons
- – Only 59g protein per 100g low purity
- – Dual-chamber gimmick limits flavours
- – Often out of stock in the UK
Quick verdict
Pros
- + 100% grass-fed whey certified
- + Added digestive enzymes for absorption
- + Informed-Choice tested IOC compliant
- + No aspartame or GMO ingredients
Cons
- – Only 59g protein per 100g low purity
- – Dual-chamber gimmick limits flavours
- – Often out of stock in the UK
Whichever product you lean toward, compare using cost per 25g of protein - not sticker price. Compare current prices on WheyWise to find the best deal today. You can also see these two products compared side by side on our dedicated comparison page.
