Protein · head-to-head

MyProtein Impact Whey vs Bulk Pure Whey.

Our independent head-to-head review of MyProtein Impact Whey Protein Powder and Bulk Pure Whey Protein, scored on value, protein density, macros and ingredient quality so you don't have to guess which to buy.

MyProtein

Impact Whey Protein Powder

75p / 25g protein

72g protein / 100g

MyProtein Impact Whey Protein Powder

Bulk

Pure Whey Protein

70p / 25g protein

71g protein / 100g

Bulk Pure Whey Protein

What a scoop actually contains

MyProtein Impact Whey Protein Powder

113 kcal · 30 g scoop

Protein is 72% of the scoop

Protein
21.6 g
(72%)
Carbs
2.7 g
(9%)
Fat
1.8 g
(6%)
Other
4.0 g
(13%)

Bulk Pure Whey Protein

120 kcal · 32 g scoop

Protein is 71% of the scoop

Protein
22.7 g
(71%)
Carbs
4.8 g
(15%)
Fat
1.1 g
(4%)
Other
3.4 g
(11%)

WheyWise verdict

MyProtein Impact Whey Protein Powder wins for most buyers.

Runner-upPrefer Bulk Pure Whey Protein? It is the second pick here, not a bad one - and Bulk stocks it.

  • 72g protein per 100g - strong for a concentrate
  • Lowest sale prices in the UK (often under £1.40/100g)
  • 40+ flavour options - biggest range on the market

How the numbers stack up against the price

MyProtein Impact Whey Protein Powder and Bulk Pure Whey Protein are the two dominant budget whey concentrates in the UK, and choosing between them is the most common dilemma for price-conscious protein buyers. MyProtein Impact Whey Protein Powder delivers 72g of protein per 100g with a massive flavour catalogue of over 40 options, backed by near-constant discount codes that can push the price below £1.40/100g during major sales. Bulk Pure Whey Protein counters with 71g of protein per 100g and a reputation for more transparent pricing - no inflated RRPs, no discount code theatrics, just a straightforward price that rarely fluctuates.

Cost per 25g protein

Lower is better

MyProtein Impact Whey Protein Powder75p
Bulk Pure Whey Protein70pWins

Protein per scoop

Higher is better

MyProtein Impact Whey Protein Powder21.6 g
Bulk Pure Whey Protein22.7 gWins

Carbs per scoop

Lower is better

MyProtein Impact Whey Protein Powder2.7 gWins
Bulk Pure Whey Protein4.8 g

Fat per scoop

Lower is better

MyProtein Impact Whey Protein Powder1.8 g
Bulk Pure Whey Protein1.1 gWins

Protein density

Higher is better

MyProtein Impact Whey Protein Powder72 g/100gWins
Bulk Pure Whey Protein71 g/100g

WheyWise score

Out of 5

MyProtein Impact Whey Protein Powder3.4Wins
Bulk Pure Whey Protein3.2

MyProtein Impact Whey Protein Powder takes the edge overall.

While both products deliver virtually identical protein content gram for gram, MyProtein's deeper sale prices and larger flavour range give it the advantage for most buyers. The constant discount codes are annoying to manage, but they consistently deliver the lowest per-100g price in the UK market. Bulk Pure Whey Protein is the better choice if you value pricing transparency and prefer a more natural-tasting shake - their vanilla and chocolate are widely praised as less artificial. But on pure value, MyProtein Impact Whey Protein Powder wins more often than not.

Where each one wins

Takes carbs per scoop, protein density and the WheyWise score.

Cheaper per serving of protein

Bulk Pure Whey Protein

Takes cost per 25g protein, protein per scoop and fat per scoop.

Neither of these quite right?

Answer five questions about your goal, budget and diet, and the Protein Finder ranks the whole range against them, with the reason each pick won.

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