What is the cheapest whey isolate in the UK?

Applied Nutrition Diet Whey Protein Isolate, £32.95 per kilo. Today's lowest price for whey isolate across the shops we track, £16.04 per kilo less than number two.

Applied Nutrition Diet Whey Protein Isolate
Cheapest per kilo £32.95 per kilo Applied Nutrition Diet Whey Protein Isolate 1 kg for £32.95 · £0.99 per serving
View at Applied Nutrition £32.95

Measured 8 October · 130 whey isolates at 3 shops · updated every day

How we calculate

  • Price per kilo. A small bag looks cheap. Per kilo shows what you really pay.
  • Discount included. The price is what you pay at checkout, with our code already applied.

The lowest price per kilo is at the top. That spot is not for sale. If you order through us, the shop pays us a commission. That doesn't change the order.

Which whey isolate is the cheapest per kilo right now?

price per kilo, discount included
  1. 1 Applied Nutrition Diet Whey Protein Isolate 1 kg for £32.95 £32.95 per kilo View
  2. 2 Myprotein Impact Whey Isolate Powder 1 kg for £48.99 £48.99 per kilo View
  3. 3 Optimum Nutrition Gold Standard 100% Isolate Whey Protein 930 g for £58.00 £62.37 per kilo View
Compare all protein →

What should you look for?

  • Do you need isolate? If you watch lactose or fat, isolate is the better choice.
  • Otherwise concentrate is often cheaper. Per gram of protein you usually pay less there.
  • Protein content. A good isolate sits at 85 percent protein or more.

Questions

All isolate prices side by side (per kilo)
# Product Price Price per unit Rating Last measured
1 Applied Nutrition Diet Whey Protein Isolate · 38 flavours £32.95 · 1 kg £32.95 / kg —
2 Myprotein Impact Whey Isolate Powder · 88 flavours £48.99 (-28%) · 1 kg £48.99 / kg 4,5/5 (5279)
3 Optimum Nutrition Gold Standard 100% Isolate Whey Protein · 4 flavours £58.00 · 930 g £62.37 / kg 4,9/5 (328)

Prices checked on 9 October 2026 — discounts are already included in the price per unit.

What does an isolate shake cost per day and per month?

Count on one shake of 30 grams a day.

Product Per shake (30 g) Per month
Applied Nutrition Diet Whey Protein Isolate £32.95 per kilo £0.99 £29.66
Myprotein Impact Whey Isolate Powder £48.99 per kilo £1.47 £44.09
Optimum Nutrition Gold Standard 100% Isolate Whey Protein £62.37 per kilo £1.87 £56.13

Calculated from the price per kilo (discount included) × 30 grams per shake, 30 times a month. Prices checked on 9 October 2026.

What is the cheapest whey isolate in the UK?
The lowest price for whey isolate across the shops we track is today Applied Nutrition Diet Whey Protein Isolate: £32.95 per kilo (£32.95 per bag of 1 kg, discount included). Measured on 8 October across 130 whey isolates at 3 shops; powder only. The list above is live: the order changes with the discounts.
What is the difference between whey isolate and concentrate?
Isolate is filtered further, contains a bit more protein and less lactose, fat and carbs. Concentrate is cheaper and perfectly fine for most people. The lowest price per kilo for concentrate: the cheapest whey protein.
Is whey isolate suitable with a lactose intolerance?
Mostly, yes. The extra filtering leaves very little lactose, often under 1 gram per serving.
Is the extra for isolate worth it?
Only if you watch lactose or your fat and carb intake, or want the higher protein per serving. Otherwise a good concentrate is often the smarter choice per gram of protein.
Clear whey or regular isolate?
Both are whey isolate. Clear whey drinks like a squash instead of a milkshake and sits lighter in the stomach, but usually costs a bit more per kilo. The prices: the cheapest clear whey.
Full explanation

Whey isolate is filtered further than regular whey: a bit more protein per serving and less lactose, fat and carbs. Ideal if you watch your macros or struggle with lactose. We line up the whey isolates of all the shops we track, compared by price per kilo, discounts and our code SPORTPOEDER already included.

Not choosing on price alone? How the SupplementScore works →

Independently compared · how we calculate · open data feed (JSON)

Applied Nutrition · 1 kg £32.95
View at Applied Nutrition