MyProtein Impact Whey Isolate vs Bulk Pure Whey Isolate

MyProtein Impact Whey Isolate Powder and Bulk Pure Whey Isolate are the two cheapest whey isolates from major UK brands, making this the comparison that matters most if you want high protein with low lactose, fat, and carbs without paying a premium price. MyProtein Impact Whey Isolate Powder delivers 76g of protein per 100g from whey protein isolate, while Bulk Pure Whey Isolate pushes ahead with 84g of protein per 100g — a significant difference that means more protein per scoop and cleaner macros across the board.

Bulk Pure Whey Isolate takes this one. The 84g protein per 100g is outstanding for a whey isolate at this price point — it means you are getting more actual protein per pound spent, which is the whole reason to buy isolate in the first place. MyProtein Impact Whey Isolate Powder is still a strong product and benefits from MyProtein's wider flavour range and more frequent sales, but on the metric that matters most for an isolate buyer — protein density per gram — Bulk delivers a measurably superior product.