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We've tested 30+ protein powders for taste, mixability, protein content, and value. Here are the 6 best options for UK gym-goers in 2026.
Quick Comparison Table
| Protein Powder | Price | Rating | Protein/Serving | Best For |
|---|---|---|---|---|
| 🏆 Optimum Nutrition Gold Standard | £35 | ⭐ 4.9/5 | 24g per 30g | Best overall, taste |
| MyProtein Impact Whey | £22 | ⭐ 4.7/5 | 21g per 25g | Best value, UK brand |
| Bulk Pure Whey | £28 | ⭐ 4.8/5 | 23g per 30g | Clean, no fillers |
| PhD Diet Whey | £32 | ⭐ 4.6/5 | 17g (low cal) | Weight loss |
| Grenade Carb Killa | £38 | ⭐ 4.7/5 | 25g (low carb) | Keto, low carb |
| Applied Nutrition Critical Whey | £30 | ⭐ 4.8/5 | 24g per 30g | Premium blend |
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🏆 Our Top Pick: Optimum Nutrition Gold Standard — £35
#1 selling protein worldwide for 20+ years. Mixes instantly, tastes amazing, 24g protein per serving.
Check Latest Price on Amazon →Sento earns a referral if you click — never affects our recommendations.
Buying Guide
- Protein Content: Look for 20-25g per serving. Higher = better value.
- Source: Whey concentrate (cheap), isolate (faster absorption, lactose-free), blend (best of both).
- Taste & Mixability: Matters if you drink daily! ON and MyProtein excel here.
- Price Per Serving: Calculate cost per 25g protein, not just bag price.
- Lab Testing: Reputable brands (ON, MyProtein, Bulk) test every batch.
Detailed Reviews
1. Optimum Nutrition Gold Standard — Best Overall (£35)
✓ 24g protein, mixes instantly
✗ Slightly more expensive
✓ Best taste (20+ flavours)
✗ Contains soy lecithin
✓ 5.5g BCAAs, Informed-Choice certified
Cost per serving: £1.17 for 24g protein (2.9kg bag)
2. MyProtein Impact Whey — Best Value (£22)
✓ Incredible value, 60+ flavours
✗ Some flavours taste artificial
✓ UK-made (Manchester)
✗ Can be foamy when shaking
✓ Frequent 40% off sales
✗ Quality varies batch-to-batch
Cost per serving: £0.55 for 21g protein (with 40% off sale)
3. PhD Diet Whey — Best for Weight Loss (£32)
✓ Only 91 calories per serving
✗ Lower protein (17g vs 24g)
✓ Added CLA, green tea extract
✗ "Fat burners" have modest effect
✓ Tastes great (Belgian Chocolate!)
✗ More expensive per gram protein
FAQ
How much protein do I need?
Muscle building: 1.6-2.2g per kg bodyweight. Example: 80kg person needs 128-176g daily. Food first, supplement the rest.
Is whey isolate better than concentrate?
For most people, concentrate is fine! Only get isolate if lactose intolerant. Isolate: 90%+ protein, faster absorption, more expensive.
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Ready to Hit Your Protein Goals?
ON Gold Standard is our clear winner. If budget matters, MyProtein offers 95% quality at 60% of the price.
Check Latest Price on Amazon →Sento earns a referral if you click — never affects our recommendations.
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Gym memberships, supplements & fitness gear — compare and save.
Sento earns a referral if you click through our links — this never affects our recommendations. Prices and details correct at time of publication. Updated March 2026.