Pure Whey Protein, Unflavoured, 5 kg
£149.99 for 5 kg at Bulk. That works out at £1.04 per 25 g protein, which ranks it 36th of the 160 whey protein concentrate products we price across 8 UK retailers.
At one 25 g dose a day, this pack lasts 5 months. A month is 30 days, so twelve of them is not quite a year.
How we worked it out
- Servings: 5000 ÷ 32 per serving = 156.3
- In the pack: 156.3 × 23 g = 3,593.8 g
- £149.99 ÷ 3,593.8 g × 25 g = £1.04 per 25 g protein
- A week £1.04 × 7 = £7.30 · a month × 30 = £31.30 · a year × 365 = £380.84
- Amount per serving: stated on the label.
The standard dose is a comparison unit, not a recommendation. Always confirm the price on the retailer's site. How we compare everything.
Cheaper whey protein concentrate
All 160, ranked →
Switching to the Myprotein pack saves £2.14 a month at the same 25 g dose.
Ranked purely by price per 25 g protein. 54 combination products also contain protein powder.
On the label
- Protein powder · Whey concentrate
- 23 g per serving (stated on the label)
- Pack
- 5 kg · 156.3 servings · 32 g a serving
- Cost per serving
- 96p (156.3 servings in the pack)
More label details
- Barcode
- 5060343741621
- Sold by
- Bulk
- What the listing says
- “5kg” · “per serving (32g)” · “[Protein ; 71 g ; 23 g]”
Ingredients
Whey Protein Concentrate (Milk), Emulsifier (Sunflower Lecithin).
From the Bulk listing. Check the pack itself if you have an allergy: labels mark allergens in bold.
Add to your basket
View basketYour basket prices everything you take together: whole packs, delivery included, from as few websites as you like.
One 25 g dose is our comparison unit, not a recommendation.
Add to my stack
My stackSee when it runs out, the day to reorder by and what it costs you a day. Free, kept on this device.
Filled in from the label’s serving: 32 g.
What you paid
Optional. At Bulk today: £149.99.
“Order by” allows 3 working days’ delivery from Bulk and your spare days.
Price history
No price change since 20 September 2026. Checked on 1 day, most recently 20 September 2026.
- Price at every check
- £149.99Bulk
- First recorded
- £149.9920 Sept
- Checked on
- 1 daysince 20 Sept
Checked once so far, on 20 September 2026.
- First checked at Bulk: £149.99
Questions about this product
How much does Bulk Pure Whey Protein cost per 25 g protein?
£1.04 per 25 g protein, from £149.99 for 5 kg at Bulk, checked on 20 September 2026.
Is it the cheapest whey protein concentrate in the UK?
No, it is 36th of 160. 100% Protein at Protein Works works out at 59p per 25 g protein.
How long does one pack last?
5 months at one 25 g dose. The pack holds 3,593.8 g in total.
About Bulk
Founded 2006 · Colchester, England
Bulk is a British sports nutrition company based in Colchester, Essex. Adam Rossiter and Elliot Dawes, who met at the University of Essex, started it in 2006 as Bulk Powders; it was renamed Bulk at the start of 2021, and the founders remain its majority owners.
All 133 Bulk products, priced per doseVisit Bulk (opens in a new tab)
More from Bulk
- Brown Rice Protein Powder 1kgrice protein · 1 kg50p per 25 g proteinCheapest per dose in its tableDetails and price history
- Pure Whey Proteinwhey protein concentrate · 2.5 kg · Unflavoured£1.09 per 25 g proteinDetails and price history
- Pure Whey Proteinwhey protein concentrate · 1 kg · Unflavoured£1.15 per 25 g proteinDetails and price history
- Vegan Protein Pancakes 500gvegan protein blend · 500 g · Vanilla£1.18 per 25 g proteinDetails and price history
