Bulk: Brand Review

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Bulk logo

Bulk (formerly Bulk Powders) built its UK market position the same way Myprotein did: direct-to-consumer, no retailer markup, large bag sizes, and Informed Sport certification at a price point that undercuts most branded competitors. Pure Whey Protein has been their benchmark product since founding in 2006 — and it remains one of the strongest cost-per-gram picks in the certified UK market.

Quick summary

Pure Whey Protein is one of the best-value Informed Sport certified whey proteins in the UK. Competes directly with Myprotein on price and certification. Large bag sizes and regular sale events reward high-volume buyers.

  • Pure Whey Protein: 21–23g protein, ~£0.40–0.65 per serving, Informed Sport certified
  • Pure Whey Isolate 97: 24–26g protein, under 0.5g fat, very low lactose — isolate upgrade
  • Direct-to-consumer UK brand — no retail markup, fast domestic delivery
  • Regular sale events similar to Myprotein — best per-serving cost in 2.5kg or 5kg bags during sales
  • US buyers: better served by Myprotein US or ON — Bulk is primarily UK/Europe

Bulk Pure Whey Protein

21–23g protein — the value benchmark for certified UK whey

The Data

The Pro Tip

Buy the 2.5kg or 5kg bag during a sale event — this is the single best move for cost efficiency. Bulk runs several major sale events per year (Black Friday, January, mid-year) where per-serving cost drops to among the lowest in the certified category. Discount codes from fitness sites are also consistently available between sales.

The Honest Critique

Narrower flavour range than Myprotein. Bulk’s flavour catalogue is solid but Myprotein’s 50+ options are a clear advantage for buyers who want variety. If you drink protein powder daily and flavour rotation matters, Myprotein has a meaningful edge. Bulk’s strength is ingredient transparency and formulation quality — not catalogue breadth.

Browse Pure Whey Protein on bulk.com →

Bulk Pure Whey Isolate 97

24–26g protein, very low lactose — the isolate upgrade

The Data

The Pro Tip

The “97” in the name refers to 97% protein by dry weight — one of the highest protein concentrations available in a mainstream isolate. If you’re calculating macros precisely and want minimal fat and carb noise per scoop, this is the more useful product than Pure Whey Protein.

The Honest Critique

Fewer flavours than the concentrate. The isolate range covers the essentials (Chocolate, Vanilla, Unflavoured) but lacks the seasonal and novelty options available on Pure Whey Protein. For buyers who upgrade to isolate for functional reasons, this is a minor inconvenience. For buyers who wanted both the isolate purity and the full flavour variety, you can’t have both.

Bulk Complete Mass

31g protein, 388 calories — for hardgainers in a deliberate bulk

The Data

The Pro Tip

Complete Mass uses oat flour as its primary carbohydrate source — a more nutritionally complete choice than the maltodextrin and dextrose found in cheaper mass gainers. This matters if you’re using it as a staple rather than an occasional top-up.

The Honest Critique

388 calories per serving is a lot if you’re not actually in a dedicated bulk. Most people who buy mass gainers don’t need them — they buy them because the protein number looks impressive and they don’t check the total calories. If you can hit your calorie target through food, do that instead. Complete Mass is a legitimate tool for hardgainers, not a general protein supplement.

Bulk Plant Protein

22–24g plant protein, Informed Sport certified

The Data

The Pro Tip

The pea + rice blend delivers a more complete amino acid profile than single-source pea protein. For vegan athletes who care about certification, Bulk’s plant protein is one of the few plant options in the UK carrying Informed Sport certification — that’s a real differentiator vs cheaper plant blends.

The Honest Critique

Texture is grainier than whey at this price point. Mixing with oat milk or almond milk improves this noticeably over water. The formulation is solid but plant protein blends at any price point cannot fully replicate the texture of whey concentrate.

Browse the full Bulk range →

Buyer’s Guide: Is Bulk Right for You?

1. UK buyers: Bulk is one of the two default answers at the value tier. Between Bulk and Myprotein, you’re comparing very similar products at the same price point with the same certification standard. The decision usually comes down to current sale pricing and flavour preference. Both are excellent — neither is wrong.

2. US buyers: look elsewhere. Bulk is primarily a UK and European operation. Shipping to the US adds cost and delivery time that eliminates the value advantage. Myprotein US and Optimum Nutrition serve the US market with similar or better value.

3. The sale timing strategy matters more than the brand choice. At full retail, Bulk’s cost per serving is competitive but not exceptional. During sale events — particularly Black Friday and January — the per-serving cost drops to match or beat most certified alternatives. If you’re buying at full price frequently, you’re not getting Bulk’s real value proposition.

FAQ

Is Bulk the same as Bulk Powders?

Yes — rebranded from Bulk Powders to Bulk in 2021. Same company, same products, new visual identity.

Is Bulk protein Informed Sport certified?

Yes. Pure Whey Protein, Pure Whey Isolate 97, and Plant Protein all carry Informed Sport certification — batch-tested for banned substances and label accuracy. See our safety testing guide.

How does Bulk compare to Myprotein?

Same value tier, same certification standard, similar price per serving. Myprotein has 50+ flavours; Bulk has better ingredient transparency reputation. Both reward buyers who time purchases around sale events. See our Myprotein review for the direct comparison.

Does Bulk ship to the US?

Bulk’s primary market is UK and Europe. US buyers will find better value and faster delivery from Myprotein US or Optimum Nutrition.

When is the best time to buy Bulk?

Black Friday and January sales. Discount codes are widely available throughout the year. 2.5kg and 5kg bags during sales deliver the lowest cost per serving.

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Last reviewed: by the protein.supply editorial team.