Side-by-side
Protein powder reviews & comparisons UK.
Reviews of individual protein powders, and head-to-heads when you are torn between two. What is actually on the label, what it works out at per 25g of protein, and what buyers report, quoted and linked to the source.
Latest reviews
One powder at a time: what the label actually says, and who it suits.
Protein Works
Whey Protein 360 - GOLD Innovation
A sweetened whey and soy blend at 68g protein per 100g, carrying twelve added vitamins and minerals and 16g of sugar.
Protein Works
Whey Protein 360 - PLATINUM Innovation
The upper tier of the 360 range: 69g protein per 100g, four protein sources, and a third less sugar than the GOLD version.
Protein Works
Vegan Protein 360 - GOLD Innovation
A soy-led vegan blend at 82g protein per 100g and 44p per 25g, carrying twelve added vitamins and 2.95g of salt.
Protein Works
Vegan Protein 360 - PLATINUM Innovation
A five-source plant blend at 81g protein per 100g with no sugar at all, and 28g of protein in a 35g scoop.
Protein Works
Vegan Pea Protein - BLACK Innovation
Single-source pea protein isolate at 76g per 100g and 39p per 25g of protein, the cheapest protein in the Protein Works range.
Protein Works
100% Micellar Casein - BLACK Innovation
Micellar casein at 80g protein per 100g with a three-item ingredient list and 0.1g of salt.
Protein Works
Diet Whey Protein Isolate - BLACK Innovation
A single-source whey isolate at 86g protein per 100g and 0.6g of fat, and the most expensive protein in the range.
Protein Works
Clear Diet Whey Protein - GOLD Innovation
A clear whey isolate at 82g protein per 100g with 0.1g of fat, 0.3g of sugar and four micronutrients at 100% of the reference intake.
Applied Nutrition
Critical Whey
A four-source protein blend at 72.7g per 100g, Informed Sport tested on three of its flavours.
USN
Blue Lab Whey
A whey concentrate at 70g protein per 100g from one of the longer-standing names on UK shelves.
Warrior
Warrior Whey
A concentrate at 71.2g protein per 100g, sold in flavours built around confectionery rather than plain vanilla.
PER4M Nutrition
Isolate Zero
An isolate at 87g protein per 100g, near the top of what we have measured on any UK label.
PER4M Nutrition
Whey Protein
Skim milk powder sits in the blend alongside the whey, which takes sugar to 10g per 100g. More than 40 flavours, halal certified.
Applied Nutrition
ISO XP
90g protein per 100g, the joint-densest label in everything we have reviewed so far.
NXT Nutrition
Beef Protein Isolate
A beef protein isolate at 90g per 100g, for anyone who wants the density without the dairy.
Scitec Nutrition
100% Whey Protein Professional
A straightforward concentrate at 73.3g protein per 100g, with no goal-specific additions on the label.
PhD Nutrition
Diet Whey
A diet whey blend at 68g protein per 100g, carrying CLA, green tea and L-carnitine on the label. Stocked in Tesco, Asda and Boots.
MyProtein
Impact Whey Protein
The default UK whey concentrate at 72g protein per 100g, and the tub most others end up being measured against.
Latest head-to-heads
Two powders, the same six checks, and a straight answer at the end.
Protein Works vs Protein Works
Whey Protein 360 Gold vs Whey Protein 360 - PLATINUM Innovation
Two tiers of the same product, and what the extra money actually buys.
Protein Works vs Optimum Nutrition
Whey Protein 360 Gold vs Gold Standard 100% Whey
The cheaper all-in-one against the protein-dense benchmark.
Protein Works vs MyProtein
Whey Protein 360 Gold vs Impact Whey Protein Powder
An all-in-one with twelve added vitamins against a plain concentrate, and the soy hiding in one of them.
MyProtein vs MyProtein
Impact Whey Protein Powder vs Impact Whey Isolate
Concentrate against isolate from the same brand, where the extra money actually goes.
PhD Nutrition vs MaxiNutrition
PHD Diet Whey vs Promax Lean All-In-One Protein Powder
Two UK diet wheys: one is the better formulation, the other is the better buy.
MyProtein vs Grenade
Impact Whey Protein Powder vs Whey Protein Powder
The volume seller against the flavour-led challenger.
Bulk vs Grenade
Pure Whey Protein vs Whey Protein Powder
Two mainstream concentrates, read off their own labels.
MyProtein vs Warrior
Impact Whey Protein Powder vs Whey
Both sit at the budget end, so this one turns on protein density.
Form Nutrition vs Bulk
Performance Protein Vegan Protein Powder vs Vegan Protein Powder
Plant against plant, where the amino profile and the price pull in different directions.
MaxiNutrition vs Mutant
Promax Lean All-In-One Protein Powder vs Whey
A lean all-in-one against a straight mass-market whey.
Warrior vs Mutant
Whey vs Whey
Two budget wheys separated more by pack size than by formula.
Optimum Nutrition vs MuscleTech
Gold Standard 100% Whey vs Nitro Tech 100% Whey Gold
The two best-known tubs on the shelf, compared on what the panel says.
MyProtein vs Bulk
Impact Whey Protein Powder vs Pure Whey Protein
The UK budget-whey question most buyers arrive with.
MyProtein vs Optimum Nutrition
Impact Whey Protein Powder vs Gold Standard 100% Whey
Budget against premium, judged on protein rather than reputation.
PhD Nutrition vs Applied Nutrition
PHD Diet Whey vs ISO XP
A diet blend against a 90g isolate, very different labels at a similar shelf price.
MyProtein vs Bulk
Impact Whey Isolate vs Natural Pure Whey Isolate
Two isolates where the difference is additives, not protein.
Applied Nutrition vs Bulk
Critical Whey vs Pure Whey Protein
A four-source blend against a single-source concentrate.
Optimum Nutrition vs Applied Nutrition
Gold Standard 100% Whey vs ISO XP
Household name against the denser label.