Best Greens Powders in the UK (2026): an honest, criteria-led comparison
The "best" greens powder depends on what you weight most. For full-dose transparency and UK manufacture, Emerald Nutrition Supergreens stands out — every one of its 60 ingredients is declared on the label and detailed on its website, with no proprietary blend. For the widest ingredient list, premium options like AG1 lead; for minimal organic formulas, Rheal. Here's how the leading UK options compare.
How we compared
- Transparency — full per-ingredient doses, or a hidden "proprietary blend"?
- Breadth — number of ingredients; vitamins & minerals included.
- Serving — grams per serving and pouch size.
- Origin — where it's made; facility standards.
- Testing — heavy metals, microbiology, batch traceability.
- Cost per day — at the typical subscription price.
- Independent research — brand-funded vs independent study.
- Extras — branded actives, starter kit, awards.
The comparison
| Criteria | Emerald Supergreens | AG1 | Huel Daily Greens | Free Soul | Rheal Clean Greens |
|---|---|---|---|---|---|
| Full-dose transparency | Every dose declared, no blend | Proprietary blend | Detailed formula published | Listed, limited dosing | 7 named ingredients |
| Ingredients | 60 | 75+ | 91 | 21 | 7 |
| Serving size | 12g | ~12g | ~8.5g | ~5g | ~5g |
| Pouch size | 360g (30 servings) | ~360g (30) | ~255g (30) | 150g (30) | 150g (30) |
| Vitamins & minerals | 24 | Yes | Yes | A few | None added |
| UK-made | Yes | No (US) | Yes | Yes | Yes |
| Third-party tested | Heavy metals · microbiology | NSF Cert. for Sport | Yes | Not stated | Organic-certified |
| Cost per day | ~£1.67 (sub) | ~£2.63 (£79/mo) | ~£1.50 | ~£0.85 | ~£0.71–0.83 |
| Creatine add-on | Yes — Ignite, 3 g fully dosed (sold separately) | AG1 Pro (new Jun 2026, not sold in the UK) — 5 g creatine, rest of blend still undisclosed | No | No | No |
| Subscription | Cancel anytime | Subscription | Cancel anytime | Cancel anytime | Cancel anytime |
| Branded standardised actives | KSM-66, Haskapa, Seagreens, Vita-algae D, DigeZyme | Mostly unnamed | Mostly commodity | KSM-66 only | Commodity organic |
| Starter / welcome kit | Scoop, stainless container, bottle | Canister + scoop | No | No | No |
| Awards & recognition | Multiple (UK awards) | — | — | — | B-Corp |
| Independent research | Studied at DMU (ongoing) | Brand-funded | Brand-funded | Brand-funded | — |
| Flavours | Pineapple, Mango | Original | Original | Mango | Original |
Comparison compiled June 2026 from public sources, creatine row added and checked 4 August 2026; prices and serving sizes fluctuate — check the latest before purchase. Emerald figures verified against our own label and spec.
One scoop, not a shelf
Most "greens" do a single job. Emerald Supergreens is multifunctional — one 12g scoop does the work of six to eight separate supplements: a daily multivitamin, a greens & superfood blend, an adaptogen complex (KSM-66), functional mushrooms, antioxidant polyphenols, CoQ10, hyaluronic acid with collagen, and a probiotic. Bought individually at UK retail those run roughly £15–£47 each; the scoop works out at about £1.67 a day.
It covers six everyday benefit areas — immunity, energy, digestion, focus & mind, skin, hair & nails, and foundational health — each tied on the label to the specific vitamin or mineral that carries an approved GB/EU health claim. The full claim wording and Article 10(2) statement are on the product page.
Greens with creatine: a new category
In June 2026 AG1 launched AG1 Pro, adding 5 g of individually-dosed creatine (plus Ca-HMB and zinc carnosine) to its existing base greens blend — though as of 4 August 2026 it isn't sold in the UK, and that base blend's own ingredient amounts remain undisclosed. Emerald's answer is two fully-dosed products rather than one: Supergreens for the daily greens routine (60 ingredients, every dose declared), and Ignite for a full 3 g creatine dose† alongside natural caffeine — both UK-made, in stock, and nothing held back as a "blend." See the full breakdown on our AG1 vs IM8 vs Emerald comparison.
Also compared: IM8, Field of Greens & Grüns
Three more brands UK shoppers ask about, and how they sit against a transparent, UK-made greens powder:
- IM8 — a US brand (imported), around 90 ingredients and premium (about £90–150 a month), weighted towards vitamins, longevity actives and probiotics rather than greens (so lighter on actual greens than Emerald, AG1 or Huel), and its core Daily Ultimate Essentials formula uses proprietary blends. Third-party tested, and comes with a welcome kit.
- Field of Greens — a US brand (imported), organic and whole-food, but built on proprietary blends, so individual doses aren't disclosed.
- Grüns — a US brand (imported) in gummy form; genuinely convenient, with fibre and 20+ vitamins and minerals, though a gummy caps the dose size and greens breadth a full mixed powder can reach, and it sits at premium pricing.
Best for…
Frequently asked
What is the best greens powder in the UK?
What should I look for in a greens powder?
Why choose a multifunctional greens powder?
Is Emerald a good AG1 alternative?
How does IM8 compare to a greens powder?
Does Emerald offer a greens powder with creatine?
How much does a greens powder cost in the UK?
†The beneficial effect of creatine is obtained with a daily intake of 3 g.
Recognised across the UK supplement industry
Recognition few greens powders can claim.
More than a pouch.
Subscribe and your first order arrives as a Welcome Kit — a premium metal scoop, a reusable stainless-steel container, a bottle and a welcome card. After that, refill pouches top up the same container: less single-use waste, a nicer daily ritual.
Of the brands compared here, only AG1 and IM8 offer a comparable starter kit — and both cost more per day. Emerald’s kit is included, from about £1.67 a day on subscription.
Branded, standardised actives — not commodity greens
Where many blends lean on unnamed commodity powders, Emerald is built on branded, standardised ingredients you can look up — including some you’d usually buy as pricey standalone supplements.
