Protein Works Compare UK 2026: Every Range, Tier and Price
Protein Works sells almost everything in Black, Gold and Platinum. We compared the whole range on cost per 25g of protein to find which tier is worth paying for, and where the names stop meaning anything.
Kevin, founder of WheyWise
Quick answer
If you want the cheapest way into Protein Works, buy Protein Works Whey Protein 360 Black, which costs 51p per 25g of protein at the 4.8kg size, checked 20 September 2026. Protein Works Whey Protein 360 Black contains 68g of protein per 100g, exactly the same as Protein Works Whey Protein 360 Gold, which costs 71p for identical protein. The tier names describe formulation, not quality. WheyWise tracks every Protein Works size and flavour that carries a live retailer price, which is how these figures are worked out.
What do Black, Gold and Platinum mean at Protein Works?
Black, Gold and Platinum describe the formulation of a Protein Works product, not its quality ranking. Black is the value-led core version, Gold sits in the middle, and Platinum is the most complete formulation with added nutritionals and the widest flavour choice. The names read like a medal table, which is why so many people assume Platinum is simply the better buy, and on the numbers that is often not true.
The honest test is what each tier costs for the same 25g of protein, because that is the only figure that survives different bag sizes and different protein percentages. A 4.8kg whey and a 1kg vegan blend cannot be compared on sticker price. Every figure in this guide is cost per 25g of protein, checked on 20 September 2026.
Which Protein Works protein is cheapest per gram?
Protein Works Vegan Soy Protein Black is the cheapest protein in the range at 35p per 25g of protein, checked 20 September 2026. Protein Works Vegan Soy Protein Black contains 86g of protein per 100g, which is also the highest protein density Protein Works sells, so it wins on both measures at once. It is a single-source soy powder rather than a blend, so it is a plainer product than the 360 range, but nothing else in the catalogue comes close on cost per gram.
The cheapest whey is Protein Works Whey Protein 360 Black at 51p per 25g of protein at the 4.8kg size, checked 20 September 2026. Here is the full ladder.
| Product | Protein per 100g | Cost per 25g of protein |
|---|---|---|
| Protein Works Vegan Soy Protein Black | 86g | 35p |
| Protein Works Vegan Protein 360 Gold | 82g | 44p |
| Protein Works Vegan Protein 360 Black | 81g | 47p |
| Protein Works Whey Protein 360 Black | 68g | 51p |
| Protein Works Vegan Protein 360 Platinum | 81g | 54p |
| Protein Works Whey Protein 360 Gold | 68g | 71p |
| Protein Works 100% Micellar Casein Black | 80g | 82p |
| Protein Works Clear Diet Whey Protein Gold | 82g | £1.37 |
Two things fall out of that table. Protein Works Whey Protein 360 Black is 28% cheaper per gram of protein than Protein Works Whey Protein 360 Gold despite both containing 68g of protein per 100g, checked 20 September 2026. And the entire vegan range undercuts the entire whey range, because plant isolates carry more protein per 100g than a whey blend with added extras.
Cheapest way into the range
Protein Works Whey Protein 360 Black
600g bag
The value pick of the whole Protein Works whey range. Same protein density as Gold, 28% less per gram.
or compare all UK prices →Cheapest way into the range
Pros
- + Costs 51p per 25g of protein at the 4.8kg size, checked 20 September 2026
- + Contains 68g of protein per 100g, identical to the dearer Gold version
- + Five flavours carry a live price, including Chocolate Silk and Vanilla Crème
Cons
- – Fewer flavours priced than the Gold and Platinum lines
- – The 4.8kg bag is a real commitment if you have not tried the flavour
●Nutrition per scoop · 20.4g protein in 30g▼
Protein makes up 68%
of this 30g scoop · 113 kcal total
Cheapest protein in the catalogue
Protein Works Vegan Soy Protein Black
1kg bag
Nothing else Protein Works sells is close on cost per gram of protein. A plain product that wins on arithmetic.
or compare all UK prices →Cheapest protein in the catalogue
Pros
- + Costs 35p per 25g of protein, checked 20 September 2026
- + Contains 86g of protein per 100g, the highest density Protein Works sells
- + Single-source soy, so a short ingredient list
Cons
- – Single protein source rather than a blend
- – Only four flavours carry a live price
●Nutrition per scoop · 25.8g protein in 30g▼
Protein makes up 86%
of this 30g scoop · 113 kcal total
What is the difference between Protein Works Gold and Platinum?
On the vegan range, Protein Works Vegan Protein 360 Platinum costs 54p per 25g of protein against 44p for Protein Works Vegan Protein 360 Gold, checked 20 September 2026, a difference of ten pence for almost identical protein. Protein Works Vegan Protein 360 Platinum contains 81g of protein per 100g and Protein Works Vegan Protein 360 Gold contains 82g, so there is no protein argument between them at all. What Platinum buys is formulation and choice: it carries fourteen flavours with a live price against nine for Gold.
Worth knowing before you go looking: there is no Whey Protein 360 Platinum in the UK range we track. Protein Works Whey Protein 360 is sold in Black and Gold only, and the Platinum tier appears on the vegan and meal lines instead. If you want the head-to-head on the tiers in detail, our Protein Works Whey Protein 360 Gold vs Platinum review goes deeper on formulation.
| Vegan Protein 360 tier | Protein per 100g | Cost per 25g of protein | Flavours with a live price |
|---|---|---|---|
| Gold | 82g | 44p | 9 |
| Black | 81g | 47p | 5 |
| Platinum | 81g | 54p | 14 |
This is where the tier naming stops being a price ladder. All three versions of Protein Works Vegan Protein 360 sit within ten pence of each other per 25g of protein, and Gold is the cheapest of the three rather than the middle option. Pick on flavour here, not on price.
Widest flavour choice in the range
Protein Works Vegan Protein 360 Platinum
1kg bag
Buy this for the flavour range rather than the formulation. The protein is the same as the cheaper Gold version.
or compare all UK prices →Widest flavour choice in the range
Pros
- + Fourteen flavours carry a live price, the most of any Protein Works product
- + Contains 81g of protein per 100g
- + Costs 54p per 25g of protein, checked 20 September 2026
Cons
- – Costs 10p more per 25g of protein than the Gold version of the same product
- – No protein advantage over the cheaper Gold tier
Is Protein Works cheaper than Bulk?
Yes, on the cheapest live option from each brand. Protein Works Whey Protein 360 Black costs 51p per 25g of protein against 90p for Bulk Pure Whey Protein, both checked 20 September 2026, which makes Protein Works 43% cheaper per gram of protein. Bulk Pure Whey Protein does contain more protein per 100g, at 71g against 68g, so it is the denser powder, but the price gap is far wider than the density gap.
| Product | Protein per 100g | Cost per 25g of protein |
|---|---|---|
| Protein Works Whey Protein 360 Black | 68g | 51p |
| Bulk Pure Whey Protein | 71g | 90p |
The catch is bag size. The 51p figure is the 4.8kg Protein Works bag, so reaching that rate means a larger upfront spend than a 1kg Bulk tub. If you are buying small, the gap narrows considerably. You can check both against the rest of the market on our whey concentrate comparison or run them side by side in the protein comparison tool.
Which Protein Works product should you buy?
Buy Protein Works Whey Protein 360 Black if you want whey, because Protein Works Whey Protein 360 Gold costs 28% more per gram of protein for the same 68g of protein per 100g, checked 20 September 2026. There is no formulation argument strong enough to justify that gap for most buyers.
Buy Protein Works Vegan Soy Protein Black if plant protein suits you, because it costs 35p per 25g of protein and contains 86g of protein per 100g, checked 20 September 2026, which is the best combination of price and density in the entire range. Buy Protein Works Vegan Protein 360 Platinum only if flavour variety matters more than ten pence per serving, because its fourteen priced flavours are the widest choice Protein Works offers.
If you are weighing Protein Works against the other UK budget giant, our MyProtein vs Protein Works price comparison runs the same arithmetic across both catalogues.
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871 products compared across 8 UK retailers
Sorted by best value per 25g of protein.
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