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Buying Guide

Best Vegan Protein Powder UK 2026: Compared on Protein, Calories and Value

Best vegan protein powder UK: soy isolate, pea isolate and blends compared on protein per 100g and calories per 25g protein, with picks from The Protein Works, Bulk, Myvegan and Form.

Bernard, Founder of ProteinDeals

Bernard, Founder of ProteinDeals

Published 5 February 2026Updated 31 October 20269 min read
Best Vegan Protein Powder UK 2026: Compared on Protein, Calories and Value

Quick answer

The Protein Works Vegan Protein 360 (GOLD) is our best all-round vegan blend: 86g protein per 100g and about 105 kcal per 25g protein from a multi-source formula. For the leanest and cheapest plant protein, choose a soy protein isolate: in our 31 October 2026 check, Pure Source Nutrition Soy Protein Isolate was about £0.20 per 25g of protein in its 5kg bag. Soy is a complete protein on its own. Bulk Vegan Protein Powder is a popular budget blend, but at 69g protein per 100g you need a bigger scoop for the same protein.

01

Vegan protein powders compared on label data

Vegan protein powders vary much more than whey. Protein per 100g in the products we track ranges from the low 60s to 90g, which changes how much powder you need per shake, how many calories come with it and how long a bag lasts.

We converted each label to protein per 100g and calories per 25g of protein. Single-source isolates (soy and pea) are the most protein-dense. Flavoured multi-source blends carry more carbohydrate, fat and flavouring, which is often what makes them nicer to drink.

Figures are calculated from the label nutrition stored in the ProteinDeals catalogue for in-stock products on 31 October 2026, using the median across flavours. Formulas change, so check the current label before buying.

ProductProtein sourceProtein per 100gkcal per 25g proteinBuy
Pure Source Nutrition Soy Protein Isolate
Soy isolate90g102
Amazon
The Protein Works Vegan Protein 360 (GOLD)
Multi-source blend86g105
DirectAmazon
Bulk Soya Protein Isolate
Soy isolate84g106
DirectAmazon
Myvegan Impact Soy Protein
Soy isolate77g114
DirectAmazon
Pure Source Nutrition Pea Protein Isolate
Pea isolate86g117
Amazon
Bulk Brown Rice Protein
Rice protein80g117
DirectAmazon
Bulk Pea Protein Isolate
Pea isolate80g123
DirectAmazon
Form Performance Protein
Multi-source blend75g126
Amazon
Myvegan Impact Pea Protein
Pea76g127
DirectAmazon
Myvegan Impact Plant Protein
Multi-source blend73g132
DirectAmazon
Bulk Vegan Protein Powder
Multi-source blend69g132
DirectAmazon

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Soy Protein Isolate Powder

Soy Protein Isolate Powder

Pure Source Nutrition · 500g

369Kcalper 100g
90gProteinper 100g
1.4gCarbsper 100g
1.5gFatper 100g

Pros

  • Provides 25g protein for about 103 kcal, keeping non-protein calories low (0.4g fat)
  • 55% cheaper per 25g protein than the median of 65 other Vegan Protein product families in this comparison
£7.99£0.444/25g protein
View dealBuy on Amazon
Compare all vegan protein
02

Best vegan protein powder UK: our picks

These picks follow the label data above and UK availability. Current prices for each are in the live comparison on this page.

  1. 1

    The Protein Works Vegan Protein 360. Our best all-round blend. The GOLD version is 86g protein per 100g and about 105 kcal per 25g protein, combining several plant sources so you are not relying on one amino-acid profile. Wide flavour range.

  2. 2

    Bulk Soya Protein Isolate. A widely available soy isolate at 84g protein per 100g and about 106 kcal per 25g protein. Soy is complete on its own. In our 31 October 2026 check it was about £0.36 per 25g of protein in the 5kg bag, more than the cheapest soy isolates below.

  3. 3

    Pure Source Nutrition Soy Protein Isolate. 90g protein per 100g and about 102 kcal per 25g protein. In our 31 October 2026 check its 5kg bag was the lowest cost per 25g of protein of the vegan powders we track, at about £0.20. A strong choice if you do not need soy-free.

  4. 4

    Pure Source Nutrition Pea Protein Isolate. The soy-free pick: 86g protein per 100g. Pea is low in methionine, so pair it with varied protein from food or a rice protein.

  5. 5

    Form Performance Protein. A premium multi-source blend at 75g protein per 100g. Choose it for flavour and formulation preference rather than protein density.

  6. 6

    Bulk Vegan Protein Powder. A popular budget blend, but at 69g protein per 100g it needs a larger scoop to reach 25g of protein, so compare cost per 25g of protein rather than bag price.

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03

Soy, pea, rice or a blend?

Soy protein isolate is a complete protein on its own and the most studied plant protein for muscle building. In our data it is also the leanest per 25g of protein and among the cheapest. The trade-off: soy is one of the 14 allergens UK labels must emphasise, and some people simply prefer to avoid it.

Pea protein is soy-free and rich in lysine, but relatively low in methionine. That is not a problem if you eat varied protein through the day; it is why many brands blend pea with rice, which is the reverse (higher in methionine, lower in lysine).

Multi-source blends combine pea, rice, soy, hemp, faba bean or seed proteins. They usually taste and mix better, but often carry less protein per 100g. The Protein Works Vegan 360 is an exception at 86g.

If you want a plant protein mainly to avoid dairy rather than for ethical reasons, the dairy-free guide also covers beef protein isolate and lactose-free whey options.

Community perspective

What others are saying

Protein works vegan protein. Strawberries and cream. Add in cherries and/or berries for health on top.

u/Equivalent_Whole_423 in r/veganfitness

I prefer the clear protein powders, not a big fan of the shake type ones. I use Myprotein most often but protein works is good too... And on that note if you want a shake type one I actually like the protein works vegan protein extreme (I tried the chocolate bueno flavour) it has 130kcal, 3g carb and 28g protein per scoop)

u/wrain10 in r/veganuk

I'm using the Vegan Wondershake from Protein Works and it's great, salted caramel flavour is very good.

u/DrRickDaglessMZd in r/veganuk

Watch what buyers found

Hands-on opinions

✅Top 10 Best Vegan Protein Powder in 2026

10 Best Reviews

A topic-specific video selected for additional practical context on Best Vegan Protein Powder UK: A Smarter Buyer's Guide for 2026.

04

What to look for in a vegan protein powder

Check the nutrition panel, not the front of the pack.

  1. 1

    Protein per 100g. Aim for 70g or more. Lower figures mean more carbohydrate, fibre or flavouring per scoop, a bigger serving for the same protein and a bag that runs out sooner.

  2. 2

    Calories per 25g of protein. Useful if you are watching calories: soy and pea isolates sit around 102 to 123 kcal, many flavoured blends around 126 to 132.

  3. 3

    Protein sources. A single soy isolate is complete. A single pea or rice protein is fine within a varied diet, and a pea plus rice blend balances the two.

  4. 4

    Taste and texture. Plant proteins vary far more in texture than whey. Buy the smallest bag first, especially for unflavoured isolates.

  5. 5

    Sweeteners and allergens. Check for sucralose, stevia or sugar, and for soy, gluten or nut warnings if they matter to you.

05

Can vegan protein match whey for building muscle?

Whey still has a small edge per gram: it is digested quickly and carries more leucine per 25g of protein. If you have no dietary restriction and only care about muscle growth, whey remains the default.

The gap matters less than most people think. When total daily protein is high enough, training studies comparing plant and whey protein have generally found similar gains in muscle and strength. Total daily intake and consistency matter more than the source.

Soy isolate and well-formulated blends are a practical way to close the gap. A slightly larger serving of a plant protein can match the leucine of a typical whey serving.

06

Common mistakes when buying vegan protein

These are the errors people make most often when switching to plant protein.

  1. 1

    Comparing bag price instead of cost per 25g of protein. A cheap-looking bag at 69g protein per 100g can cost more per 25g of protein than a pricier isolate at 85g or more.

  2. 2

    Avoiding single-source powders by default. Soy isolate is a complete protein. Single-source pea or rice is fine when the rest of your diet supplies varied protein.

  3. 3

    Buying a big bag of an untried flavour. Plant texture and taste vary widely, so a small bag first is cheap insurance.

  4. 4

    Paying extra for organic without checking protein. Organic plant proteins can be lower in protein per 100g, so you may pay more for less protein.

Related reading

Vegan Protein for Muscle Building: Best Options Compared for 2026

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Vegan Protein for Muscle Building: Best Options Compared for 2026

Affordable Mass Gainer UK: A Smarter Buyer's Guide for 2026

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Affordable Mass Gainer UK: A Smarter Buyer's Guide for 2026

07

How to find the cheapest vegan protein in the UK

Compare by cost per 25g of protein, which accounts for bag size, serving size and protein percentage. The live comparison on this page sorts vegan powders on that basis using current retailer prices.

Larger bags usually lower the unit price, but only once you know you like the product. Retailer codes and sales change often, so check the deals page before buying.

References

Sources and further reading

  1. 01
    ProteinDeals catalogue label data, 31 October 2026

    Protein and energy per 100g for in-stock vegan products, converted to calories per 25g of protein.

  2. 02
    Food Standards Agency: food allergy and intolerance

    UK allergen labelling, including soy as one of the 14 allergens.

Frequently asked questions

What is the best vegan protein powder in the UK?+

The Protein Works Vegan Protein 360 is our best all-round blend at 86g protein per 100g (GOLD version). For the leanest option, choose a soy protein isolate such as Pure Source Nutrition Soy Protein Isolate (about 102 kcal per 25g protein). If you need soy-free, Pure Source Nutrition Pea Protein Isolate offers 86g protein per 100g.

What is the lowest calorie vegan protein powder?+

Per 25g of protein, soy protein isolates were the leanest in our 31 October 2026 check: Pure Source Nutrition Soy Protein Isolate at about 102 kcal and Bulk Soya Protein Isolate at about 106. Flavoured multi-source blends were typically 126 to 132 kcal.

Is vegan protein as good as whey for building muscle?+

Whey has a small edge per gram, but when total daily protein is matched, training studies generally find similar gains in muscle and strength. Soy isolate and well-formulated blends close most of the gap.

Is pea protein a complete protein?+

Pea protein contains all essential amino acids but is relatively low in methionine. Within a varied diet that is rarely an issue; blending pea with rice protein balances it.

What is the cheapest vegan protein powder in the UK?+

It changes with sales, but in our 31 October 2026 check Pure Source Nutrition Soy Protein Isolate had the lowest cost per 25g of protein of the vegan powders we track, about £0.20 in its 5kg bag, with 5kg soy and pea isolates from XCelerate Nutrition and Peak Supps at about £0.21 to £0.26. Compare by cost per 25g of protein rather than bag price, using the live comparison.

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