Various · 5kg
21g
89
0.7g
0.2g
£0.36per 25g protein
£59.99 bag·1 retailer·
Bulk
Bulk Protein Range: UK Price Comparison
Every Bulk protein product tracked, ranked by cost per 25g protein. UK pricing across stocking retailers, each price shown with its check date.
22 products tracked57+ retailersDated price checks
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Is Bulk a good brand?
Bulk is the right choice if you want consistent low pricing without tracking flash sales. The subscription model knocks 10 to 25 percent off every recurring order automatically. Pure Whey is the value flagship, the vegan and casein ranges are competitive, and Bulk publishes ingredient sourcing on most product pages if you care where your protein comes from. WheyWise tracks 24 Bulk products across 7 categories. The cheapest is £0.36 per 25g of protein on Soya Protein Isolate 5kg, ranging up to £2.08 across 3 UK retailers. The table below ranks every Bulk product by current cost.
CHEAPEST
Vegan5kg
Various · 5kg
19.5g
95
1g
1.4g
£0.38per 25g protein
£59.99 bag·1 retailer·
Vegan5kg
Various · 2.5kg
20g
94
1g
0.9g
£0.42per 25g protein
£33.99 bag·1 retailer·
Vegan2.5kg
Serious Shredz Bulk Meal Replacement · 4kg
17g
90
2.9g
0.6g
£0.44per 25g protein
£47.89 bag·1 retailer·
CHEAPEST
Whey concentrate4kg
Banana · 2.5kg
18g
95
3g
1g
£0.46per 25g protein
£32.99 bag·1 retailer·
Whey concentrate2.5kg
Chocolate Peanut · 500g
17.3g
91
1.1g
1g
£0.51per 25g protein
£7.00 bag·1 retailer·
Vegan500g
Various · 800g
22.5g
90
0.5g
0.1g
£0.68per 25g protein
£19.52 bag·1 retailer·
CHEAPEST
Clear whey800g
White Chocolate · 5kg
17.8g
95
3.8g
0.9g
£0.70per 25g protein
£99.99 bag·1 retailer·
Whey concentrate5kg
Chocolate · 2.5kg
20g
93
1g
0.5g
£0.85per 25g protein
£67.99 bag·1 retailer·
CHEAPEST
Casein2.5kg
Unflavoured · 2.5kg
19.2g
92
0.9g
1.3g
£0.91per 25g protein
£69.99 bag·1 retailer·
Whey concentrate2.5kg
Strawberry · 2.5kg
7.8g
92
11g
1.5g
£0.97per 25g protein
£29.99 bag·1 retailer·
BULK GAINS
Mass gainer2.5kg
Vanilla · 2.275kg
18g
95
3g
1g
£0.99per 25g protein
£64.99 bag·1 retailer·
Whey concentrate2.275kg
White Chocolate · 5kg
21g
90
0.5g
0.1g
£1.01per 25g protein
£169.99 bag·1 retailer·
CHEAPEST
Whey isolate5kg
Protein Powder · 2.27kg
20.3g
95
1.1g
1g
£1.02per 25g protein
£74.99 bag·1 retailer·
HIGHEST PROTEIN %
Whey concentrate2.27kg
Chocolate Ice Cream · 4.05kg
5.5g
93
15g
1g
£1.23per 25g protein
£43.99 bag·1 retailer·
Mass gainer4.05kg
Chocolate · 500g
16.3g
85
2.5g
1.3g
£1.23per 25g protein
£15.99 bag·1 retailer·
Whey concentrate500g
Chocolate · 2.5kg
19.5g
100
2g
1.4g
£1.28per 25g protein
£99.99 bag·1 retailer·
Whey isolate2.5kg
Tropical · 2kg
20g
86
1.2g
0.2g
£1.33per 25g protein
£84.99 bag·1 retailer·
Clear whey2kg
Vanilla · 5kg
5.5g
93
15g
1g
£1.36per 25g protein
£59.99 bag·1 retailer·
Mass gainer5kg
Slime · 1kg
16.3g
88
3.8g
0.8g
£1.50per 25g protein
£38.99 bag·1 retailer·
Clear whey1kg
Strawberry · 2.5kg
5.5g
93
15g
1g
£1.59per 25g protein
£34.99 bag·1 retailer·
Mass gainer2.5kg
Based · 300g
20g
88
0.8g
0.1g
£2.08per 25g protein
£19.99 bag·1 retailer·
Clear whey300g
Browse All Bulk Products (22)
About Bulk
UK prices on every Bulk product we track, ranked by cost per 25g of protein. Every price is shown with the date it was checked.
Frequently Asked Questions
How much does Bulk protein cost per 25g?
Bulk currently ranges from £0.36 to £2.08 per 25g of protein. The cheapest product right now is Soya Protein Isolate 5kg. Subscription pricing reduces the cost by 10 to 25 percent on recurring orders.
Is Bulk UK made?
Yes. Bulk manufactures in an ISO 22000 certified facility in Colchester, Essex. The brand publishes ingredient sourcing on most product pages, which is unusual at this price tier.
Is Bulk or Myprotein better value?
It depends on your shopping habit. Myprotein wins during flash sales if you time reorders. Bulk wins if you want consistent low pricing without tracking discount cycles. Compare the prices in the table above.
Compare Other Protein Brands
Applied NutritionMyproteinOptimum NutritionIsopurePhD NutritionGrenadeProtein WorksCNP ProfessionalSci-MX NutritionReflex NutritionKineticaPeak SuppsBoditronicsNXT NutritionMatrix NutritionThe Bulk Protein CompanyBioTech USAPulsinDY NutritionMaxiNutritionXCelerate NutritionPure Source NutritionProtein DynamixUSNPER4M NutritionWarriorESNOlimp NutritionEfectiv NutritionThe Health ProjectSports FuelNaughty BoyTrec NutritionTime 4 NutritionSTRT NutritionAtlasTrained by JPScitec NutritionNutriSportStrom Sports NutritionMutantBSNAnimalScience in SportAll Brands
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Brand battles
Two brands, one clear winner.
Myprotein vs Bulk
The UK's two biggest DTC brands, head-to-head
ON vs Myprotein
Premium global vs budget UK favourite
Myprotein vs Protein 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, with every price shown alongside the date it was checked. 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
Every price carries its date
Prices come from the retailer's own listing, never an RRP, and each one is shown with the day it was last checked so you can judge how current it is.
04
No sponsored placements
Rank order is cost per 25g of protein. Some outbound links earn commission; none of them buy a position in the table.
22 results