Best 3D Printer Filament Brands in the UK 2026

Not All Filament Is Equal

I used to think filament was filament. PLA is PLA, right? Then I printed the same model back-to-back with a budget spool from Amazon and a roll of Polymaker PolyTerra. Same printer, same settings, same gcode file. The Polymaker print was visibly smoother, the colour was richer, and the surface had fewer blemishes.

That’s when I started paying attention to brands.

The UK market has more filament choice than ever in 2026. The downside is that wading through dozens of brands on Amazon to find one that’s actually consistent is exhausting. So I’ve done it for you. These are the brands I’ve used extensively, ranked honestly.

Quick Comparison

Brand	PLA Price/kg	Tolerance	Colour Range	UK Availability	Overall
Polymaker	£18-22	±0.02mm	Excellent	Amazon UK, 3DJake	Best overall
Bambu Lab	£16-20	±0.03mm	Good	Bambu Store only	Best for Bambu owners
eSUN	£15-18	±0.03mm	Good	Amazon UK	Best budget
Prusament	£25-28	±0.02mm	Limited	Prusa Store	Best premium
Eryone	£14-17	±0.03mm	Very good	Amazon UK	Best value colours
Hatchbox	£18-22	±0.03mm	Good	Amazon UK	Reliable all-rounder
SUNLU	£12-15	±0.05mm	Excellent	Amazon UK	Best cheap option

Polymaker — Best Overall

Polymaker is the filament I recommend most, and the one I use for anything that matters. Their PolyTerra PLA line is outstanding — beautiful matte surface finish, tight diameter tolerance, and an enormous colour palette including some gorgeous earth tones and pastels.

What I particularly like is the eco angle. PolyTerra spools are cardboard, not plastic, and Polymaker plants a tree for every spool sold. That’s not why I buy it — I buy it because the quality is superb — but it’s a nice bonus.

PolyTerra PLA (about £19/kg on Amazon UK): Matte finish, slightly lower strength than standard PLA, stunning colours. My go-to for display pieces and gifts. The “Muted White” shade is genuinely one of the prettiest filaments I’ve used.

PolyLite PLA (about £18/kg): Standard glossy PLA with the same tight tolerances. Better strength than PolyTerra. Use this for functional parts.

PolyLite PETG (about £20/kg): Consistent, clear in the transparent version, good layer adhesion. My preferred PETG.

I’ve gone through probably 30+ spools of Polymaker across PLA, PETG, and TPU. I’ve had one bad spool — a PolyTerra roll with a tangle that caused a print failure 18 hours in. Annoying, but one dud in 30+ is an acceptable rate.

Downsides: Slightly more expensive than budget brands. Some colours sell out on Amazon UK and take weeks to restock.

Bambu Lab — The Ecosystem Play

Bambu Lab’s own-brand filament is designed to work seamlessly with their printers. The RFID-tagged spools automatically set temperature and flow rate when loaded into an AMS unit. Genuinely clever stuff.

Bambu PLA Basic (about £16-18/kg): Solid quality, decent colour range, prints reliably at high speeds. The auto-recognition with Bambu printers is the killer feature — load it, the printer reads the tag, and settings are applied automatically.

Bambu PLA Matte (about £19/kg): Beautiful surface finish. Hides layer lines better than any glossy PLA. I printed a planter in their Charcoal Matte and it looked like it came from a shop.

Bambu PETG-CF (about £30/kg): Carbon fibre reinforced PETG. Strong, stiff, looks professional. Requires a hardened nozzle (the carbon fibre wears brass nozzles quickly).

The main limitation is availability. You can only buy Bambu filament direct from the Bambu Lab store. Delivery to the UK takes 3-7 days from their EU warehouse. No same-day or next-day Amazon Prime delivery. That catches you out when you run out mid-project.

The RFID system also means you’re paying a premium for a feature that only works with Bambu printers. If you’ve got mixed hardware, the auto-recognition advantage disappears.

Downsides: Only available from Bambu’s own store. No Amazon UK presence. Colour range is narrower than Polymaker or eSUN.

eSUN — Best Budget Option

eSUN has been around for years, and their PLA+ is probably the most-used budget filament in the UK. At around £15-17 per kg on Amazon UK with Prime delivery, it’s hard to argue with.

eSUN PLA+ is slightly tougher than standard PLA — better impact resistance and less brittle. It’s become my default for functional parts where I don’t care about surface aesthetics. The dimensional accuracy is reasonable (±0.03mm) and I’ve had very few tangles across probably 20 spools.

Colour consistency between batches is where eSUN wobbles slightly. I bought two spools of their “Fire Engine Red” three months apart and they’re visibly different shades. Not a problem for separate projects, but annoying if you’re printing a multi-spool project.

eSUN PETG (about £17/kg): Works well. Slightly stringier than Polymaker PETG but for £3 less per kg, it’s a fair trade.

My mate runs a small Etsy shop selling 3D printed planters and uses nothing but eSUN PLA+. He’s gone through over 100 spools with maybe 3-4 duds. At his volume, the savings over premium brands add up to hundreds of pounds a year.

Downsides: Colour consistency between batches isn’t perfect. Limited specialty filament range.

Prusament — Premium, If You Can Get It

Prusament is the gold standard for filament quality. Every spool is manufactured with ±0.02mm tolerance and comes with an online quality report showing the actual measured diameter along the entire spool. Nobody else does this.

Prusament PLA (about £25-28/kg shipped to UK): The most consistent PLA I’ve used. Colours are rich, surfaces are clean, and I’ve never had a tangle. But that price. For a material that costs a few quid to manufacture, £25-28 per kg stings.

Prusament PETG (about £27/kg shipped): Same impeccable quality. Their Galaxy Black PETG is stunning — flecks of glitter in a deep black. Gorgeous for display pieces.

Shipping to the UK from the Prusa store adds cost and time. You’re typically looking at £5-8 shipping and 5-10 days delivery. Some colours are frequently out of stock.

Do I use Prusament regularly? Honestly, no. The quality is fantastic but I can’t justify the 40-50% premium over Polymaker for results that are only marginally better. I keep a spool of Galaxy Black PETG for special prints. That’s about it.

Downsides: Expensive. UK shipping adds cost and wait time. Limited availability.

Eryone — Surprising Quality for the Price

Eryone doesn’t get talked about as much as eSUN or SUNLU, which is a shame because they’re genuinely good. Their colour range is excellent — they do dual-colour, silk, and marble effects that look properly impressive.

Eryone PLA (about £14-17/kg on Amazon UK): Reliable, smooth feeding, reasonable tolerance. Their silk filaments (Silk Gold, Silk Copper, Silk Silver) are some of the best-looking budget silk PLAs available. I printed a decorative vase in their Silk Copper and it looked like actual brushed metal.

Eryone PETG (about £16/kg): Decent quality, good adhesion. Nothing to write home about but solid for the price.

I’ve used about 15 spools of Eryone without a single failure. The diameter consistency isn’t quite Polymaker levels, but it’s better than SUNLU and comparable to eSUN. If you want interesting colours without paying Polymaker prices, Eryone is the answer.

Downsides: Less well-known means fewer community profiles and settings recommendations online.

Hatchbox — The Reliable All-Rounder

Hatchbox was one of the first filament brands to build a serious reputation online, and they’re still going strong. Quality is consistently good without being exceptional.

Hatchbox PLA (about £18-22/kg on Amazon UK): Clean prints, good colour range, decent spool quality. It’s the “you can’t go wrong” option. Nothing exciting, nothing bad.

Hatchbox’s pricing has crept up over the years, and at £20+ per kg you’re in Polymaker territory without the same quality edge. I used Hatchbox exclusively for about a year before trying Polymaker, and the difference was enough to switch permanently.

Downsides: Pricing no longer competitive with eSUN/Eryone at the budget end or Polymaker at the premium end. Stuck in the middle.

SUNLU — Cheapest That’s Still Usable

SUNLU is the budget king. At £12-15 per kg with frequent Amazon UK deals, it’s the cheapest filament I’d actually recommend. Below SUNLU’s price point, quality drops off a cliff.

SUNLU PLA (about £12-14/kg): Adequate. Prints are fine for prototypes, test parts, and anything where surface finish isn’t critical. Diameter tolerance is wider than the competition (±0.05mm officially, and I’ve measured worse on occasion). This means your extrusion multiplier might need adjusting between spools.

SUNLU PLA+ (about £14-16/kg): Marginally better quality than their standard PLA. Worth the extra £2.

I keep a few rolls of SUNLU in basic colours for prototyping and test prints. I wouldn’t use it for anything I’m selling or giving as a gift, but for knocking out a quick bracket or test-fitting a design? Perfectly adequate, and half the price of Polymaker.

I printed a batch of cable management clips in SUNLU PLA. Functional, not pretty. One spool had a section with visible diameter variation — the extruder gear was clicking as it struggled to push the thicker section through. That kind of thing doesn’t happen with better brands.

Downsides: Inconsistent diameter. Colour matching between batches is poor. Tangles more common than premium brands.

What About Specialist Filaments?

For PETG vs PLA decisions and ABS vs PLA comparisons, see our dedicated guides. Our full filament types comparison covers every material in detail.

Most of the brands above also make PETG, ABS, and TPU. Generally, if a brand makes good PLA, their other materials are reliable too. Polymaker’s PolyFlex TPU and PolyLite ASA are both excellent. eSUN’s ABS+ is solid for the price.

My Recommendation

If you want the best quality: Polymaker PolyTerra or PolyLite PLA. £18-22/kg and worth every penny.

If you want reliable and cheap: eSUN PLA+ at £15-17/kg. The sweet spot of quality and price for most hobbyists.

If you want interesting colours without spending much: Eryone silks and dual-colours at £14-17/kg.

If you own a Bambu Lab printer: Bambu Lab PLA Basic for the convenience of RFID auto-settings. Supplement with Polymaker for colours Bambu doesn’t offer.

If you just need cheap filament that works: SUNLU PLA at £12-14/kg. Accept the occasional dodgy spool.

Don’t overthink it. Pick one brand, buy two spools, and start printing. You can always switch later once you know what quality level you actually care about. Most of the prints sitting on my shelf were printed in eSUN PLA+ and they look great.