Whey Isolate UK

Whey isolate goes through additional filtering to remove most of the fat and lactose, resulting in a high quality protein source that is typically 90% or more protein by weight. It delivers a complete amino acids profile - including all essential amino acids needed for muscle repair and recovery - making it the go-to choice for people on a strict calorie budget, those with mild lactose sensitivity, or anyone who wants maximum protein per scoop.

We track whey isolate products across UK retailers, all normalised to price per 100g so you can compare fairly regardless of bag size or serving suggestion. You will typically pay more per 100g than concentrate, but you are getting significantly more high quality protein per gram of powder.

If budget is your main concern and you tolerate lactose well, whey concentrate may be the better value option. For a completely dairy-free alternative, browse our vegan protein comparison.