BulkWhey concentrate
Bulk Pure Whey Protein
Prices checked . Label checked .
Bulk Pure Whey Protein costs 97p per 25g of protein in the 4kg pack (£109.99 at Bulk). That makes it the 5th cheapest of 21 reviewed animal-protein powders with a live price. It is a whey concentrate with 71g of protein per 100g and 23g in a 32g scoop, on the manufacturer's label.
- Best for
- High-volume lifters who want a plain, single-source whey concentrate with 23g of protein per scoop.
- Skip if
- You want an isolate or a low-lactose shake, since this carries around 12g of lactose per 100g.
- Watch out
- "Pure" means unblended, not isolate: this is a whey concentrate at 71g of protein per 100g.
- Protein / 100g
- 71g
- Per 32g scoop
- 23g
- Per 25g protein
- 97p
- 4kg pack
- £109.99
Our verdict on Bulk Pure Whey Protein
Bulk Pure Whey Protein suits lifters getting through 150g to 200g of protein a day who want a plain, cheap shake. It is a single whey concentrate at 71g of protein per 100g, giving 23g in a 32g scoop, with sunflower rather than soy lecithin. The caveat is the name: "Pure" means nothing else is blended in, not isolate-grade filtration, and buyers do get caught by it. Expect around 12g of sugar, mostly lactose, and 1.0g of salt per 100g.
How the price compares
Bulk Pure Whey Protein against the 3 reviewed powders nearest to it on type and price, on cost per 25g of protein. Each figure is that product’s best in-stock partner listing, packs of 400g and over.
| Product | Type | Protein / 100g | Per 25g protein |
|---|---|---|---|
| MyProtein Impact Whey Protein | Whey concentrate | 72g | 90p |
| Bulk Pure Whey Protein | Whey concentrate | 71g | 97p |
| Warrior Whey | Whey concentrate | 71.2g | £1.01 |
| USN Blue Lab Whey | Whey concentrate | 70g | £1.05 |
Where to buy Bulk Pure Whey Protein
Live prices from partner retailers, one row per retailer at its best value pack, ordered by cost per 25g of protein. A bigger pack usually costs less per 25g, so compare like for like.
| Retailer | Pack size | Price | Per 25g protein | Go to retailer |
|---|---|---|---|---|
| Bulk | 4kg | £109.99 | 97p | View deal ↗ |
| Amazon UK | 5kg | £149.99 | £1.06 | View deal ↗ |
Sold in 500g, 1kg, 2.5kg, 5kg. 2 partner retailers stock a 400g or larger pack.
Pros and cons
Pros
- Sunflower lecithin, not soy, which is rare at this price
- A single protein source, so you know exactly what you are drinking
- Bulk manufactures most of its own range, and the standard price tends to hold without waiting for a code
- 2.5kg and 5kg bags for anyone shifting real volume
Cons
- "Pure" is not isolate. At 71g per 100g this is a concentrate, and buyers regularly order it expecting otherwise
- Around 12g of lactose per 100g. If dairy sits badly on you mid-session, the isolate is the version to look at
- Salt is 1.0g per 100g, which is high for a whey and worth noting if you already eat salty
- The unflavoured tub is genuinely polarising, so buy the small bag first
Nutrition and ingredients
From the manufacturer’s published label (Source). One protein, whey concentrate, and nothing blended in behind it. "Pure" is a claim about that, not about filtration: this is not an isolate and it is not marketed as one anywhere except in the name.
These are the flavoured figures. Almost all of the 15g of carbohydrate is lactose carried over from the concentrate, which is why the sugar line reads 12g even though no sugar appears in the ingredients. Flavours vary, so read the pack you are actually holding rather than this table.
| Nutrient | Per 100g | Per 32g |
|---|---|---|
| Protein | 71g | 23g |
| Energy | 378 kcal | 121 kcal |
| Carbohydrate | 15g | 4.8g |
| of which sugars | 12g | 3.8g |
| Fat | 3.5g | 1.1g |
| of which saturates | 1.9g | 0.6g |
| Fibre | 1.4g | 0.4g |
| Salt | 1g | 0.3g |
- Protein source
- Whey protein concentrate (milk)
- Sweeteners
- Sucralose
- Emulsifier
- Sunflower lecithinWorth knowing if you avoid soy. Myprotein Impact Whey uses soy lecithin, and this does not.
- Pack sizes
- 500g, 1kg, 2.5kg, 5kg
- Flavours
- A large flavour range plus an unflavoured tub. The unflavoured one divides people sharply, and both sides of that are quoted below.
- Third-party testing
- Informed Sport: no evidence found. Bulk sells a separate product called Informed Whey Protein for batch-tested assurance, which is a strong signal that standard Pure Whey is not covered. If you are drug tested, buy the Informed tub rather than assuming this one is equivalent.
- Made by
- Sports Supplements Limited, trading as Bulk, Colchester, EssexBulk says it makes over 80% of its products in its own facilities, which is unusual for a UK direct-to-consumer brand and is the reason its standard price holds up without a discount code.
What the maker does not publish
- Bulk publishes one nutrition panel rather than one per flavour, so the carbohydrate and sugar figures on a chocolate tub and a vanilla tub are not necessarily identical to the table above.
- We found no batch-test certification for standard Pure Whey, and Bulk does not state on the product page whether it is tested to any third-party programme.
Method: nutrition figures come from the manufacturer label. Cost per 25g of protein is the pack price divided by the grams of protein in the pack, multiplied by 25.
What buyers say
Quoted word for word and linked, so you can read the full review or thread.
Recurring themes
- The unflavoured tub splits opinion, from "a bit nicer than MyProtein" to complaints about a slimy, sour taste.
“The product labeled pure whey gives the impression that it is whey isolate. However it is whey concentrate.”
“Vanilla and strawberry pure whey protein has great taste and mixes really well. Great price too!”
“I ordered unflavoured whey which although isn't the best tasting flavour, is in my opinion a bit nicer than MyProtein.”
“Unflavoured Whey Protein Powder, when mixed with liquid is slimy, tastes like sour, gone-off milk plus salt.”
Quick answers
Is Bulk Pure Whey Protein an isolate?
No. It is whey protein concentrate at 71g per 100g. "Pure" means a single unblended protein, not the level of filtration. Bulk sells Pure Whey Isolate separately, at 81g per 100g.
How much protein is in a scoop of Bulk Pure Whey?
23g of protein in a 32g scoop on the flavoured version. If you aim for 2g of protein per kg of bodyweight, most lifters are looking at two scoops a day alongside food.
Does Bulk Pure Whey contain soy?
No soy lecithin: the emulsifier is sunflower lecithin. It does contain milk. Myprotein Impact Whey, its closest rival on price, uses soy lecithin.
Is Bulk Pure Whey Informed Sport tested?
We found no evidence that it is. Bulk sells a separate Informed Whey Protein for batch-tested assurance, so if you are subject to testing, buy that rather than the standard tub.
Alternatives to Bulk Pure Whey Protein
Bulk
Pure Whey Isolate
81g protein per 100g against 71g here, if density is what you are after.
£1.30 / 25g protein
MyProtein
Impact Whey Protein
Leaner macros: 4.5g sugar and 7g fat per 100g.
90p / 25g protein
Applied Nutrition
Critical Whey
Leaner macros: 4.8g sugar and 4.9g fat per 100g.
96p / 25g protein
Head-to-head reviews
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Label and copy last reviewed 8 September 2026 · Prices last fetched 17 September 2026