Lowest delivered total: £29.48
Trained By JP
Trained By JP Performance Protein 1kg
1 current retailer and 1 recently checked offer.
Offer checked 3 Nov 2026, 12:25
UK retailer price comparison
Compare Whey Protein Prices UK
Compare recently checked Whey Protein offers from UK supplement retailers. We show the lowest known delivered total for each product when delivery is available, without estimating missing prices or nutrition.
Current coverage: 94 Whey Protein products, 480 recently checked offers from 9 retailers. 17 products have current offers from multiple retailers.
Quick decision
Your quickest answers, using only verified current data
One product can earn more than one answer. We show fewer cards when the evidence does not support three different products.
Best verified value: £0.83 per 25 g protein
Mountain Joe's
Mountain Joe's Shake A Whey 1.8kg
2 current retailers and 5 recently checked offers.
Offer checked 3 Nov 2026, 12:25
Broadest coverage: 2 retailers
Per4m
Per4m Whey Protein 2kg
2 current retailers and 62 recently checked offers.
Offer checked 3 Nov 2026, 12:25
Current comparison
Whey Protein prices and retailer coverage
Latest retailer check: 3 Nov 2026, 13:03
Products with broader retailer coverage appear first. Within each product, recently checked offers are ordered by known delivered total. This is a coverage-first comparison, not a claim that the first product is nutritionally superior.
Showing 12 of 94 products
1. Per4m
Per4m Whey Protein 2kg
2,000 g · 67 verified servings · 22 g verified protein per serving
62 recently checked in-stock offers from Jon's Supplements, Gladiator Nutrition.
Offer checked 3 Nov 2026, 12:25
Lowest current delivered price
£58.94
Includes known delivery
Available at Jon's Supplements
- Delivered price / serving
- 88.0p
- Cost / 25 g protein
- £1.00
2. Time 4
Time 4 Whey Protein Professional 1.8kg
1,800 g · 60 verified servings · 25 g verified protein per serving
6 recently checked in-stock offers from Jon's Supplements, eBay UK.
Offer checked 3 Nov 2026, 13:03
Lowest current delivered price
£50.98
Includes known delivery
Available at Jon's Supplements
- Delivered price / kg
- £28.32
- Delivered price / serving
- 85.0p
- Cost / 25 g protein
- £0.85
3. Mountain Joe's
Mountain Joe's Shake A Whey 1.8kg
1,800 g · 60 verified servings · 20 g verified protein per serving
5 recently checked in-stock offers from 10 Reps, Jon's Supplements.
Offer checked 3 Nov 2026, 12:25
Lowest current delivered price
£39.98
Includes known delivery
Available at 10 Reps
- Delivered price / kg
- £22.21
- Delivered price / serving
- 66.6p
- Cost / 25 g protein
- £0.83
4. CNP
CNP Peptide Whey Protein Blend 2.27kg
2,270 g · 35 verified servings · 47 g verified protein per serving
4 recently checked in-stock offers from Jon's Supplements, eBay UK.
Offer checked 3 Nov 2026, 13:02
Lowest current delivered price
£69.98
Includes known delivery
Available at Jon's Supplements
- Delivered price / kg
- £30.83
- Delivered price / serving
- £2.00
- Cost / 25 g protein
- £1.06
5. Efectiv
Efectiv Whey Protein 60 Serving 1.8kg
1,800 g · 60 verified servings · 23 g verified protein per serving
7 recently checked in-stock offers from Jon's Supplements.
Offer checked 3 Nov 2026, 12:25
Current available price
£56.98
Includes known delivery
Available at Jon's Supplements
- Delivered price / kg
- £31.66
- Delivered price / serving
- 95.0p
- Cost / 25 g protein
- £1.03
6. CNP
CNP Premium Whey 2kg
2,000 g · 66 verified servings · 21 g verified protein per serving
5 recently checked in-stock offers from Jon's Supplements.
Offer checked 3 Nov 2026, 12:25
Current available price
£46.98
Includes known delivery
Available at Jon's Supplements
- Delivered price / kg
- £23.49
- Delivered price / serving
- 71.2p
- Cost / 25 g protein
- £0.85
7. CNP
CNP Premium Whey 900g
900 g · 30 verified servings · 21 g verified protein per serving
3 recently checked in-stock offers from Jon's Supplements.
Offer checked 3 Nov 2026, 12:25
Current available price
£29.98
Includes known delivery
Available at Jon's Supplements
- Delivered price / kg
- £33.31
- Delivered price / serving
- 99.9p
- Cost / 25 g protein
- £1.19
8. CNP
CNP Whey Isolate 1.8kg
1,800 g · 60 verified servings · 24 g verified protein per serving
1 recently checked in-stock offer from Jon's Supplements.
Offer checked 3 Nov 2026, 12:25
Current available price
£72.98
Includes known delivery
Available at Jon's Supplements
- Delivered price / kg
- £40.54
- Delivered price / serving
- £1.22
- Cost / 25 g protein
- £1.27
9. Trained By JP
Trained By JP ISO PRO 1.8kg
1,800 g · 60 verified servings · 27 g verified protein per serving
1 recently checked in-stock offer from Jon's Supplements.
Offer checked 3 Nov 2026, 12:25
Current available price
£73.98
Includes known delivery
Available at Jon's Supplements
- Delivered price / kg
- £41.10
- Delivered price / serving
- £1.23
- Cost / 25 g protein
- £1.14
10. Trained By JP
Trained By JP Performance Isolate Tri Blend 2kg
2,000 g · 66 verified servings · 24 g verified protein per serving
1 recently checked in-stock offer from Jon's Supplements.
Offer checked 3 Nov 2026, 12:25
Current available price
£63.48
Includes known delivery
Available at Jon's Supplements
- Delivered price / kg
- £31.74
- Delivered price / serving
- 96.2p
- Cost / 25 g protein
- £1.00
11. Trained By JP
Trained By JP Performance Protein 1kg
1,000 g · 33 verified servings · 21 g verified protein per serving
1 recently checked in-stock offer from Jon's Supplements.
Offer checked 3 Nov 2026, 12:25
Current available price
£29.48
Includes known delivery
Available at Jon's Supplements
- Delivered price / kg
- £29.48
- Delivered price / serving
- 89.3p
- Cost / 25 g protein
- £1.06
12. Trained By JP
Trained By JP Performance Protein 2kg
2,000 g · 66 verified servings · 21 g verified protein per serving
1 recently checked in-stock offer from Jon's Supplements.
Offer checked 3 Nov 2026, 12:25
Current available price
£49.98
Includes known delivery
Available at Jon's Supplements
- Delivered price / kg
- £24.99
- Delivered price / serving
- 75.7p
- Cost / 25 g protein
- £0.90
How prices are compared
We use active, mapped, in-stock retailer offers checked within 24 hours. Where both the product price and delivery charge are known, the delivered total decides the lowest current offer for that product. An offer with unknown delivery cannot outrank one with a complete delivered total.
109 older or unusable in-stock offers are currently excluded. Prices and stock can change after the shown check time, so confirm the final amount at the retailer.
When value metrics are shown
Price per kilogram and cost per 25 g of protein appear only when the required package, serving and nutrition fields have been reviewed and marked as verified. Missing information is left blank rather than estimated from a product name or retailer description.
Whey Protein comparison questions
What is included in this comparison?
The page covers reviewed Whey Protein powders and whey-based blends in the SupplementScout catalogue. Plant, beef, collagen, egg and casein-only products are excluded even if a retailer placed them in a broad protein category.
Are concentrate, isolate and clear whey the same?
They are different product types and formulations. This page groups them as Whey Protein but keeps each canonical product and pack size separate so prices are not compared as if the products were identical.
Does the first product mean the best Whey Protein?
No. The order favours products with more current retailer coverage. SupplementScout does not make a quality or health ranking without evidence that supports it.
Why is a value calculation sometimes missing?
A current price can be valid even when package or nutrition data is incomplete. We still show the retailer comparison but hide any per-kilogram, per-serving or protein calculation that cannot be verified safely.
How often are prices checked?
Only offers checked within the last 24 hours are eligible for this page. Each product shows its latest check time, and stale prices are removed from the current ranking.
We only feature this comparison in search when it includes enough recently checked offers from multiple UK retailers. If coverage is temporarily limited, you can still use the page, but we will not present it as a complete market comparison.