CHEAPEST
Choose size
21g
90
1.2g
0.3g
Myprotein vs Protein Works
Myprotein vs Protein Works: Price Comparison 2026
Myprotein vs Protein Works head-to-head across every product, ranked by cost per 25g of protein. UK pricing from 181+ brands, every price read from the retailer’s own page and re-checked daily.
37 products trackedChecked daily
Back to all proteinQuick filters
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19g
99
2g
1.4g
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20.5g
89
1.4g
0.3g
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19g
97
0.7g
1.8g
Choose size
20.8g
95
1.5g
0.6g
Choose size
19.8g
90
1.4g
0.7g
CHEAPEST
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17g
93
4.8g
0.8g
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14.8g
91
6.3g
0.8g
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16.3g
107
0.9g
4g
Choose size
17.5g
90
1.5g
1.3g
CHEAPEST
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19.5g
88
1.7g
0.5g
Choose size
18g
96
2.2g
1.5g
Choose size
16.3g
93
2.4g
1.6g
HIGHEST PROTEIN %
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19.8g
89
0.8g
0.3g
Size
600g
14.8g
92
7g
0.7g
CHEAPEST
20.5g
89
1g
0.5g
BULK GAINS
Size
8kg
7.8g
92
11g
1.5g
Size
1kg
17.5g
90
0.8g
0.8g
Size
1kg
18.5g
96
1.8g
1.5g
16.8g
89
3g
1.1g
Choose size
6.3g
96
15.5g
1.1g
Size
1kg
19g
97
0.7g
1.8g
HIGHEST PROTEIN %
19.5g
100
2g
1.4g
Size
1kg
17.5g
90
0.8g
0.8g
Browse All Myprotein & Protein Works Products (37)
Myprotein vs Protein Works: The Breakdown
Myprotein and Protein Works are two of the UK's biggest direct-to-consumer budget protein brands. Both sell direct, both ship from UK warehouses, and both run near-constant discount codes, so their headline prices are almost never what you actually pay. The question buyers keep asking is which one is genuinely cheaper once you normalise for protein content.
This page answers that with data, not opinions. Every product from both brands is listed below with UK pricing, normalised to cost per 25g of protein so you can compare fairly regardless of bag size. On the spec sheet Protein Works Whey 80 carries 74g of protein per 100g against Myprotein Impact Whey's 72g, but Myprotein's floor price per 100g of protein has been lower on average over the last quarter. Protein Works Whey 80 wins on bag price (1kg from around £17.89 vs Myprotein's £22.99), while Myprotein wins on flavour range with 48 options against Protein Works' five.
Every price is read from the retailer’s own page and re-checked daily, and the cheaper brand can flip depending on which sale is live. Use the grid below to see which brand offers the better cost per 25g of protein right now, then read the full breakdown underneath.
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Brand battles
Two brands, one clear winner.
MyproteinBulk
The UK's two biggest DTC brands, head-to-head
ONMyprotein
Premium global vs budget UK favourite
MyproteinProtein Works
Impact Whey vs Whey 80, cheapest per 25g
Power users
Advanced comparison: every product, filteredDense table view with every product, full filter sidebar, and no editorial surfaces.
Methodology
How we rank every bag.
Independent and transparent. Every price is read from the retailer's own page and checked daily. Here's what goes into each score.
01
Cost normalised to £/25g
Every bag divided by its true protein weight, so you see the real cost of a scoop across any size or brand.
02
Protein density, measured
Protein per 100g from the product's own nutrition panel, so a 90% isolate and a 72% concentrate are never compared on bag price alone.
03
Real prices, checked daily
Prices come from the retailer's own listing, never an RRP, and we re-check them every day rather than leaving a feed to drift.
04
Rankings can't be bought
Rank order is cost per 25g of protein. Some outbound links earn commission, and some Amazon links marked Ad pay per click; none of them buy a position in the table.
Questions, answered.
On cost per 25g of protein, Myprotein Impact Whey has averaged slightly cheaper than Protein Works Whey 80 over the last quarter, with a floor around £2.42 per 100g against Protein Works' £2.61. On sticker price for a 1kg bag, Protein Works is cheaper (from about £17.89 vs Myprotein's £22.99). Because both brands rely on stacked discount codes, the genuinely cheaper option changes week to week, which is why the grid above ranks by cost per 25g of protein and re-checks every price daily.
Protein Works Whey 80 has more protein per 100g. It carries 74g of protein per 100g against Myprotein Impact Whey's 72g per 100g. Both are honest, batch-tested labels, and the 2g gap is small in practice, but Protein Works edges the spec sheet while Myprotein tends to edge the price per gram.
Neither is clearly better, they suit different buyers. Protein Works Whey 80 is the pick for higher protein density per 100g (74g vs 72g) and a lower everyday bag price. Myprotein Impact Whey is the pick for the widest flavour range (48 flavours), 5kg bulk bags, and the lowest cost per gram during a headline sale. On the WheyWise scorecard Myprotein Impact Whey totals 78/100 and Protein Works Whey 80 totals 74/100.
Both brands sell direct, and Myprotein is also stocked on Amazon. Prices swing with each brand's current sale and discount codes, so the cheapest option changes regularly. Use the comparison grid above to find the cheapest price per 25g of protein across 181+ UK brands. Every price is read from the retailer’s own page and re-checked daily.