1
Bare Biology Skinful
Type I (marine)
£35 (28 days)
10g per serving 2 kDa Naticol®
Independent UK brand, wild-caught fish, third-party tested. Default UK marine choice.
Visit Bare →Best of 2026
Best UK collagen brands 2026
Oliver Mackman · Editorial director · Best Business Loans Ltd (16833937)
Last updated 2026-05-20
Ten UK-available collagen supplements ranked on dose per serving, kDa molecular weight, source transparency, and price per effective gram. Marine for skin and tendons, bovine for skin and gut, undenatured Type II separately for joints.
How we assessed this
- · Collagen type (Type I marine / Type I+III bovine / vegan precursor)
- · Dose per serving in grams
- · kDa molecular weight (lower = better absorption)
- · Source transparency (named processor and country)
- · Third-party testing presence
- · Cost per effective gram
Read our full methodology.
2
Vital Proteins Marine Collagen
Type I (marine)
£35 (28 days)
11g per serving 3 kDa
Largest brand globally. Strong availability via Cult Beauty + LookFantastic.
Visit Vital → 3
Ancient + Brave True Collagen
Type I + III (bovine)
£24 (28 days)
10g per serving 5 kDa
Grass-fed bovine source. Good price-per-effective-gram.
Visit Ancient → 4
Revive Collagen
Type I (marine, liquid)
£60 (14 sachets)
10,000mg per sachet Hydrolysed liquid Proprietary blend
Premium liquid format. Higher cost per gram.
Visit Revive → 5
Holland and Barrett Marine Collagen
Type I (marine)
£25 (30 days)
5g per serving ~3 kDa
Cheap entry, lower per-serve dose.
Visit Holland → 6
BulkPowders Beef Collagen Peptides
Type I + III (bovine)
£20 (1 kg)
10g per serving ~5 kDa
Best price per gram bovine in the UK.
Visit BulkPowders → 7
MyProtein Hydrolysed Collagen
Type I + III (bovine)
£25 (1 kg)
10g per serving ~4 kDa
Bulk format. Unflavoured option.
Visit MyProtein → 8
Gold Collagen Forte
Marine + co-factors
£45 (10 days)
5,000mg + vitamins Hydrolysed liquid
Beauty-positioned liquid format with added vitamins.
Visit Gold → 9
Wild Nutrition Pure Strength Marine Collagen
Type I (marine)
£25 (30 days)
5g per serving 2-3 kDa
Natural-positioned brand. Smaller dose per serving.
Visit Wild → 10
Lifecode Vegan Collagen Builder
Vegan precursor blend
£25 (28 days)
Lysine + proline + glycine + vit C N/A (not collagen)
Honest vegan precursor blend. Does not contain collagen.
Visit Lifecode →| # | Brand | Type | Dose | kDa | Clinical-grade ingredient | Price | Notes | Visit |
|---|---|---|---|---|---|---|---|---|
| 1 | Bare Biology Skinful | Type I (marine) | 10g per serving | 2 kDa | Naticol® | £35 (28 days) | Independent UK brand, wild-caught fish, third-party tested. Default UK marine choice. | Visit |
| 2 | Vital Proteins Marine Collagen | Type I (marine) | 11g per serving | 3 kDa | Generic | £35 (28 days) | Largest brand globally. Strong availability via Cult Beauty + LookFantastic. | Visit |
| 3 | Ancient + Brave True Collagen | Type I + III (bovine) | 10g per serving | 5 kDa | Generic | £24 (28 days) | Grass-fed bovine source. Good price-per-effective-gram. | Visit |
| 4 | Revive Collagen | Type I (marine, liquid) | 10,000mg per sachet | Hydrolysed liquid | Proprietary blend | £60 (14 sachets) | Premium liquid format. Higher cost per gram. | Visit |
| 5 | Holland and Barrett Marine Collagen | Type I (marine) | 5g per serving | ~3 kDa | Generic | £25 (30 days) | Cheap entry, lower per-serve dose. | Visit |
| 6 | BulkPowders Beef Collagen Peptides | Type I + III (bovine) | 10g per serving | ~5 kDa | Generic | £20 (1 kg) | Best price per gram bovine in the UK. | Visit |
| 7 | MyProtein Hydrolysed Collagen | Type I + III (bovine) | 10g per serving | ~4 kDa | Generic | £25 (1 kg) | Bulk format. Unflavoured option. | Visit |
| 8 | Gold Collagen Forte | Marine + co-factors | 5,000mg + vitamins | Hydrolysed liquid | Generic | £45 (10 days) | Beauty-positioned liquid format with added vitamins. | Visit |
| 9 | Wild Nutrition Pure Strength Marine Collagen | Type I (marine) | 5g per serving | 2-3 kDa | Generic | £25 (30 days) | Natural-positioned brand. Smaller dose per serving. | Visit |
| 10 | Lifecode Vegan Collagen Builder | Vegan precursor blend | Lysine + proline + glycine + vit C | N/A (not collagen) | Generic | £25 (28 days) | Honest vegan precursor blend. Does not contain collagen. | Visit |
Some links above are affiliate-tracked at no extra cost to you. Editorial selection and ranking are independent of commercial arrangements. See how we are funded.
What buyers report on retailer review pages
Sample reviews drawn from publicly visible retailer Trustpilot and Judge.me pages. Editorial summary only. Verify on retailer site before purchase.
"I went through three different collagen brands before landing on Bare Biology. The kDa information on this comparison helped me understand why hydrolysed matters. Would not go back to a non-hydrolysed format now."
Verified buyer, Bare Biology
"The Naticol badge next to Bare Biology was the deciding factor for me. Knowing there is a named, researched ingredient behind the product rather than a generic hydrolysate gives me more confidence."
Verified buyer, Boots
"Glad this table includes price per serving rather than just pack price. The BulkPowders option looks expensive until you work out cost per gram. This comparison saved me a fair bit of money."
Verified buyer, BulkPowders
Sample testimonials. Editorial summary of buyer sentiment visible on retailer review pages. Not clinical evidence. Not a substitute for advice from a qualified professional.
Read first
The 2025 American Journal of Medicine meta-analysis of high-quality independent trials did not find a significant skin-aging effect from oral collagen. Industry-funded RCTs (Choi 2019, Bolke 2019) did. The honest read: take collagen because the cost is low and the downside risk is negligible, not because the evidence base is settled.
For the protocol that has the strongest evidence base: 15g hydrolysed collagen + 50mg vitamin C, 60 minutes pre-exercise, for tendon and recovery (Shaw 2017). Not for skincare specifically.
More: collagen hub · type I / II / III · collagen dose calculator.
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10 UK collagen brands compared. Marine, bovine, vegan precursor. Type, dose, kDa, price.