Last updated: 14 May 2026 — independent UK buyer’s guide for guinea pig owners. Affiliate links to UK retailers are used where indicated; recommendations are independent.
Half of the “guinea pig cages” sold on the UK high street don’t actually meet the RSPCA’s minimum size — and almost all of them quietly assume you only have one guinea pig, which is itself a welfare problem. This guide is built around the two facts every guinea pig owner needs to start from: guinea pigs must be kept in pairs or larger groups, and the floor space for that pair must be at least 120 × 60 cm, with 145 × 75 cm being the genuine welfare target rather than a luxury.
We’ve reviewed ten cages that meet that bar — from the community-favourite Kavee C&C system to the Ferplast plastic-base alternatives and the Omlet Eglu Go for outdoor setups — and named the four common UK cage categories that don’t. We also walk through the £55–£75 DIY C&C build that has become the British guinea pig community’s quiet standard.
Why Guinea Pigs Need a Pair — and Why That Changes the Cage Size
Guinea pigs are herd animals. In the wild they live in groups of 5–10. Solo housing causes measurable chronic stress — withdrawn behaviour, suppressed immunity, shortened lifespan — and is taken seriously enough as a welfare issue that Switzerland has banned the keeping of single guinea pigs by law since 2008. The UK has no equivalent legislation but the RSPCA, Blue Cross, and PDSA all recommend pairs as the absolute minimum.
Practically this means every cage decision starts from “what does a pair need?” — not from “what does one cute guinea pig need?”. Single-guinea-pig cages sold in UK pet shops are welfare-substandard regardless of their dimensions. If you currently have one guinea pig, get a second.
Sex-Pairing: What Works in the UK
| Combination | Success rate | Notes |
|---|---|---|
| Two sisters from same litter | High | Simplest, no neuter required |
| Two unrelated females | Good with proper introduction | Try a Cats Protection-style “speed-dating” intro |
| Neutered male + female(s) | High | Most stable trio: M-neutered + 2F |
| Two brothers from same litter | Variable | Often fights as adults; separate if so |
| Two unrelated males | Low | Usually fight at sexual maturity |
| Single guinea pig | Not recommended | Welfare issue regardless of cage size |
For deeper detail on welfare ethics see our is it okay to have one guinea pig? guide, and for personality detail see guinea pig behaviour.
The Actual UK Welfare Minimum (Not What Pets at Home Sells You)
RSPCA 120 × 60 cm: The Floor, Not the Target
The RSPCA’s 2011 guinea pig care guide specifies 120 × 60 × 45 cm minimum for two guinea pigs — roughly 0.72 m². This is a welfare floor, not a comfortable target. The British guinea pig community (rescues, forums, vets) has consistently pushed for 145 × 75 cm (2×4 C&C grid layout) as the genuine standard.
For each additional guinea pig beyond two, RSPCA recommends adding 30 × 60 cm. So a trio needs ~150 × 60 cm minimum, and four guinea pigs need 180 × 60 cm or equivalent.
Why “Rabbit Hutches” Don’t Count
A surprising amount of “guinea pig housing” sold in the UK is actually re-labelled rabbit hutch. The two animals have very different needs:
- Guinea pigs cannot use vertical space. They have poor depth perception, fragile spines, and weak hind legs. Multi-storey hutches give them ramps they fall down — guinea pig vets see a steady stream of spinal injuries from this.
- Guinea pigs need much wider floor footprints than rabbits per body size. A 100 × 50 cm hutch that suits one young rabbit comfortably is welfare-substandard for two adult guinea pigs.
- Wire-mesh floors, common in older hutches, cause bumblefoot (pododermatitis) in guinea pigs within months — guinea pig feet are softer than rabbit feet.
2 × 4 C&C — The British Guinea Pig Standard
“C&C” stands for Cubes & Coroplast — a modular system of metal storage cubes plus corrugated plastic floor sheets, popularised in the US in the early 2000s and now the default in UK guinea pig forums. A 2 × 4 grid layout (two grids wide, four grids long) gives 145 × 75 cm of unbroken floor space — about double the RSPCA minimum, at roughly the price of a mid-range commercial cage.
The Kavee brand (UK-based, kavee.com) has standardised the format and is the dominant UK retailer. Candecosies (candecosies.co.uk) supplies the fleece liners and accessories. The DIY route — IKEA grids plus coroplast from a sign-making supplier — costs £55–£75 for the same dimensions if you’re handy.
Quick Comparison: 10 Best UK Guinea Pig Cages 2026
| Cage | Size (cm) | Pair / Trio | 2026 UK price |
|---|---|---|---|
| Kavee C&C 2×4 | 145×75 | Pair (ideal) | £130–£170 |
| Kavee C&C 5×2 | 180×75 | Trio | £170–£220 |
| Kavee C&C 2×6 | 220×75 | Four pigs | £220–£280 |
| DIY C&C 2×4 | 145×75 | Pair | £55–£75 |
| Ferplast Krolik 140 | 142×72 | Pair | £100–£150 |
| Ferplast Krolik 160 | 162×60 | Trio (just) | £140–£200 |
| Savic Caesar Suite Plus | 120×60 | Pair (minimum) | £90–£130 |
| Omlet Eglu Go (outdoor) | w/ 2m run | Pair | £250–£380 |
| Kavee 2×3 (entry) | 120×75 | Pair (just) | £90–£130 |
| Midwest Habitat (folding) | 120×60 | Pair (travel) | £80–£120 |
The 10 Best Guinea Pig Cages UK 2026 — Full Reviews
1. Kavee C&C 2×4 — Best All-Round
£130–£170 · 145 × 75 × 37 cm · 10,875 cm² · UK brand · uk.kavee.com
Our default recommendation. Kavee’s 2×4 C&C gives a pair of guinea pigs almost double the RSPCA welfare minimum, in a modular format you can extend later. Assembly is genuinely tool-free — the metal grids slot into plastic connectors, the coroplast base drops in, done in 20 minutes. The fleece-liner ecosystem (Kavee’s own and Candecosies’) makes daily cleaning manageable.
Best for: first-time guinea pig owners with a pair; long-term keepers. Skip if: you want a plastic-walled aesthetic rather than wire grids.
Buy: kavee.com (direct), Amazon UK.
2. Kavee C&C 5×2 (or 2×5) — Best for Trios
£170–£220 · 180 × 75 × 37 cm · 13,500 cm²
The 5×2 layout is identical to 2×5 — just rotated. For three guinea pigs (especially the popular 2F + 1 neutered M trio), this is the right size. Larger than RSPCA minimum for three (which would be ~150 × 60 cm), but the extra space matters because trios establish territorial spots within the cage.
3. Kavee 2×6 — Best for Quartets & Active Households
£220–£280 · 220 × 75 × 37 cm · 16,500 cm²
For four guinea pigs or for a pair whose owners want to genuinely indulge them. At 220 cm long, this footprint takes a full wall in most UK rooms — measure carefully before buying.
4. DIY C&C 2×4 — Best Welfare-Compliant Budget Option
£55–£75 · 145 × 75 cm · 10,875 cm² · IKEA grids + coroplast
The British guinea pig community’s quiet best-kept secret. You buy:
- 14 metal storage grids from IKEA (Algot/Antonius range), Wilko, or B&M — £15–£25 total
- One 4×8ft sheet of 4mm coroplast/correx from a UK sign-making supplier (signbox.co.uk, signomatic) — £20–£35
- Cable ties for grid connections — £3
- 3 fleece liners (DIY or Candecosies/Etsy) — £30–£60
Total build time: 90 minutes. Step-by-step photo guides live on theguineapigforum.co.uk. We have a full walkthrough in our how to make a guinea pig cage article.
5. Ferplast Krolik 140 — Best Commercial Plastic-Base
£100–£150 · 142 × 72 × 50 cm · 10,224 cm² · Italian brand
The mainstream commercial alternative to a C&C build. Solid plastic base (no welfare bumblefoot risk), wire-mesh upper section, front-opening door. Sturdy and well-finished. The downside vs C&C is that you can’t extend it later — if you upgrade to a trio, you start again.
Best for: owners who prefer a single moulded enclosure over modular grids. Skip if: you might add a third guinea pig later.
6. Ferplast Krolik 160 — Best Larger Commercial
£140–£200 · 162 × 60 × 50 cm · 9,720 cm²
The longer Krolik. Just exceeds RSPCA-recommended size for a trio (150 × 60 cm minimum). Same build quality as the Krolik 140. The 60 cm width is the cage’s main constraint — slightly narrower than 2×4 C&C’s 75 cm, which matters more than the length difference.
7. Savic Caesar Suite Plus — Best Premium Plastic
£90–£130 · 120 × 60 × 50 cm · 7,200 cm² · Belgian brand
Belgian-engineered with the same Plaza-line build quality you find in the Savic hamster cages. Just meets RSPCA minimum for a pair. Multiple front doors. The slightly higher wire walls reduce escape risk for young guinea pigs.
Best for: pair-only, sensible-budget UK households. Skip if: you want more than the bare welfare minimum.
8. Omlet Eglu Go Guinea Pig — Best Outdoor / Garden
£250–£380 · housing + 2m run · UK brand · omlet.co.uk
The only outdoor option we recommend without caveats. Omlet’s Eglu Go is insulated, predator-proof, designed specifically around guinea pig physiology, and comes with a properly secured run. UK climate makes outdoor housing risky for guinea pigs — temperatures below 15°C and above 26°C are dangerous — but the Eglu Go handles the realistic UK range with proper extra insulation in winter and shade in summer.
Best for: garden households with sheltered patios. Skip if: you live in an exposed location, on the coast, or in a flat without secure outdoor access.
9. Kavee C&C 2×3 — Best Bare-Minimum Compliant
£90–£130 · 120 × 75 × 37 cm · 9,000 cm² · entry-level Kavee
The smallest Kavee size we’d recommend. Just meets RSPCA pair-minimum but with the same Kavee build quality as the larger layouts. Useful as a starter cage that you can extend to 2×4 or 2×5 later by adding a second module.
10. Midwest Habitat — Best Folding / Travel-Friendly
£80–£120 · 120 × 60 × 35 cm · 7,200 cm² · folds flat
An option for renters who move flat regularly, or as a quarantine cage for new arrivals. Folds flat for storage between moves. Just meets pair-minimum. Build quality is “good enough” rather than premium.
Cages We Strongly Advise Against
- 100 × 50 cm “Guinea Pig Cages” — under RSPCA welfare minimum for a pair, regardless of marketing. These are the most common “starter cages” in UK pet shops. The pair-rule makes them welfare-substandard by default.
- Wire-floor hutches — guarantee bumblefoot within months. Solid plastic or fleece-covered base only.
- Multi-storey hutches — guinea pigs are not climbers. Ramps cause fall injuries; useable area on any single level is usually below the welfare minimum even before falls.
- Generic “small pet starter kits” under £50 — universally below welfare minimum, with cheap accessories that need immediate replacement.
- Rotastak or tube-style modular cages (mostly marketed for hamsters but occasionally for guinea pigs) — completely inappropriate for guinea pigs of any age.
Build Your Own: £55–£75 DIY C&C Walkthrough
Materials
- 14 metal storage cubes / grids (35 × 35 cm panels) — IKEA Algot, Wilko, B&M, or Amazon UK generic. £15–£25.
- One 4mm coroplast (correx) sheet, 8ft × 4ft — UK sign-makers (signbox.co.uk, signomatic.co.uk). Around £25.
- 30+ cable ties (10 cm length). £3.
- Three fleece liners — DIY or from Candecosies/Etsy. £30–£60.
Step-by-Step Build (90 minutes)
- Lay out grids on the floor in a 2-wide × 4-long pattern (sides will require additional grids for walls).
- Cable-tie adjacent grids together at top and bottom edges.
- Mark out the coroplast sheet: 145 × 75 cm base, with 15 cm-high walls scored and folded up at each side.
- Cut and score with a sharp craft knife and metal ruler (do not cut through — just score to fold).
- Fold the coroplast walls up; tape the corners with strong waterproof tape (gorilla tape works).
- Drop the coroplast base into the grid framework. The walls hold the coroplast vertical.
- Add fleece liners on top of the coroplast (or paper-based bedding underneath fleece).
Full DIY photo walkthrough lives on our how to make a guinea pig cage guide. For dimensions specifically, see how big should a guinea pig cage be?
Indoor vs Outdoor — UK Climate Reality
Most UK guinea pig welfare organisations now recommend indoor housing as the default. Guinea pigs tolerate temperatures between 15 °C and 22 °C comfortably; below 5 °C or above 26 °C they enter clinical distress. UK winters routinely include sub-5 °C nights even in the South; UK summers regularly hit 30 °C+ in heat-waves.
Indoor Setup Considerations
- Position out of direct sunlight (heat-stress risk during summer afternoons through south-facing windows).
- Away from radiators (overheating) and draughty external doors.
- On a sturdy table or dedicated stand — a filled C&C 2×4 weighs 8–12 kg before liners.
- Quiet location — guinea pigs are prey animals and react to sustained loud noise (TVs, kitchens) with chronic stress.
Outdoor: Predator-Proof Standards
Outdoor housing in the UK requires:
- Predator-proof construction: foxes can open most pet-shop hutch latches. Use two-stage locks or carabiners.
- Wire mesh below 2 cm: anything larger lets stoats and weasels in.
- Insulated sleeping area: 5 cm fleece + straw layer minimum for UK winters.
- Shaded run access: half of any outdoor run must be permanently shaded.
- Slug-protection: slug pellets are highly toxic; use beer traps instead, and never feed greens from a slug-affected garden without thorough washing.
The Omlet Eglu Go is the only commercially-available product we’d recommend for UK outdoor guinea pigs without major modification. Catio-style custom builds (using Catnets or ProtectaPet panels) work but cost £400+ and require landlord/freeholder consent on most rented properties.
Cleaning Routine — The 3-Day Rule
Guinea pigs produce a lot of waste — about 100 droppings per day per animal. Two guinea pigs in a 145 × 75 cm cage need spot-cleaning every day and a full bedding refresh every 3 days. Fleece-liner setups can extend this to weekly liner changes with daily spot-clean.
Fleece Liner Workflow (lowest cost long-term)
- Daily: scoop visible droppings and hay-piles into bin; quick wipe of wet spots with damp cloth.
- Every 5–7 days: full liner change; wash dirty liners on 30 °C non-bio (fragrance-free), tumble-dry low or line-dry.
- Monthly: deep clean the coroplast base with white-vinegar solution.
Disposable Bedding Workflow
- Daily: scoop and refresh hay in feeding area.
- Every 3 days: full bedding replacement (paper-based bedding, aspen, or hemp from our best guinea pig bedding UK review).
- Monthly: full coroplast clean.
Detailed cleaning protocol: how to clean a guinea pig cage.
Buying Guide — 7-Point Welfare Checklist
- Floor area — minimum 0.72 m² for a pair (e.g. 120 × 60 cm or 145 × 75 cm). Add 0.18 m² per additional pig.
- Single-floor design — no ramps, no multi-storey.
- Solid floor — never wire-mesh; bumblefoot risk.
- Adequate height — 35 cm minimum so an adult guinea pig can stand on hind legs to “popcorn” (jump in place).
- Access doors — at least one front-opening door for daily interaction without picking the pig up over walls.
- Cleaning compatibility — base must be removable or accessible for at least 3-day full clean cycle.
- Extension capacity — if you might add a third pig, choose a system that extends (C&C wins this one decisively).
Setup Costs — Year-1 UK Reality (Pair)
| Item | Typical 2026 UK cost |
|---|---|
| Cage (Kavee 2×4 or Ferplast 140) | £100–£170 |
| Fleece liners × 3 | £60–£90 |
| Hides × 3 + tunnels | £30–£60 |
| Water bottles × 2 + food bowls × 2 | £20–£35 |
| Hay (year supply — 1 kg per pig per week) | £150–£220 |
| Pellet food (year) | £70–£110 |
| Fresh veg supplement (year, vitamin C carrier) | £80–£120 |
| Two guinea pigs (rescue or breeder) | £20–£80 |
| Vet emergency fund (recommended) | £250+ set aside |
| Year-1 total (typical, no emergency) | £530–£885 |
Annual ongoing cost (hay, pellets, veg, fleece replacements): £350–£500. The hay budget is the single biggest line — and the hardest to economise on, because guinea pigs eat 80% hay by volume of diet (see best guinea pig food UK).
Where to Buy in the UK
- Kavee (uk.kavee.com) — best for C&C cages, liners, accessories. UK-based, fast delivery.
- Candecosies (candecosies.co.uk) — UK fleece-liner specialist, fits Kavee and Ferplast cages.
- Omlet (omlet.co.uk) — Eglu Go for outdoor housing.
- Zooplus (zooplus.co.uk) — best for Ferplast, Savic, Trixie commercial cages.
- Amazon UK — Kavee, Ferplast, Midwest, IKEA grids (sold by third parties).
- IKEA + Wilko / B&M — grids and storage cubes for DIY C&C builds.
- Sign-making suppliers (signbox.co.uk, signomatic.co.uk) — coroplast sheets for DIY C&C.
- Pets at Home — useful for accessories, but their default guinea pig cages are welfare-marginal. Skip the cages, take the food and bedding.
FAQ — Best Guinea Pig Cage UK
What is the minimum cage size for two guinea pigs in the UK?
120 × 60 cm — endorsed by the RSPCA. The British guinea pig community treats 145 × 75 cm (Kavee 2×4 C&C) as the genuine welfare target. For a trio, add 30 × 60 cm minimum.
Can a guinea pig live alone?
No — it is a welfare issue. Guinea pigs are herd animals and chronic solitude causes measurable stress, immune suppression, and shortened lifespan. Switzerland has banned single-guinea-pig housing by law since 2008. UK welfare bodies recommend pairs as the minimum.
What is a C&C cage and why are they so popular?
C&C stands for Cubes & Coroplast: metal storage grids assembled around a corrugated plastic floor sheet. They give more floor space per pound than any commercial cage, are modular, and the dominant choice in UK guinea pig forums. Kavee is the leading UK retailer; DIY builds from IKEA grids cost £55–£75.
Is the Kavee 2×4 big enough?
Yes — it’s the British guinea pig community’s standard. 145 × 75 cm is comfortably above the RSPCA’s 120 × 60 cm pair-minimum and gives genuine welfare margin.
Can I keep guinea pigs in a rabbit hutch?
No, not safely. Rabbit hutches are usually multi-storey (guinea pigs fall down ramps), often wire-floored (bumblefoot), and sized for one rabbit rather than a pair of guinea pigs. The two species look similar but housing requirements differ significantly.
Indoor or outdoor — which is safer for UK guinea pigs?
Indoor, in almost all UK climates. UK winters are colder than guinea pigs tolerate; UK heatwaves are now regularly above 26 °C. Outdoor housing is viable only with an insulated, predator-proof setup (Omlet Eglu Go or equivalent) and indoor-rehoming for extreme temperatures.
How much does a welfare-compliant guinea pig setup cost in year 1?
£530–£885 typical, including the pair of pigs, cage, accessories, food and hay for the year. Set aside a further £250 vet emergency fund — guinea pig vet appointments are not cheap and dental/respiratory issues are common.
Are multi-storey cages safe for guinea pigs?
No — guinea pigs have weak hind legs and poor depth perception. Falls from ramps cause spinal and limb injuries. Choose a single-floor cage.
How often should I clean a guinea pig cage?
Spot-clean every day. Full bedding refresh every 3 days for paper/aspen-based bedding; full liner change every 5–7 days for fleece-liner setups. Deep-clean the coroplast base monthly.
Where can I buy a Kavee cage in the UK?
Direct from uk.kavee.com (fastest delivery, full range) or Amazon UK (smaller range). Kavee runs UK warehousing so delivery is typically 2–4 days.
When to See a Vet (Cage-Related Conditions)
- Bumblefoot (pododermatitis) — red, swollen footpads or limping. Common in wire-floor cages and on dirty fleece. Vet visit needed; fix the housing in parallel.
- Repetitive bar-biting or pacing — welfare red flag. Upgrade the cage first.
- Mite infestation — itching, hair loss, restlessness. Cage hygiene contributes; ivermectin treatment via vet is standard.
- Vitamin C deficiency / scurvy — joint pain, reluctance to move, rough coat. Not directly cage-caused but linked to inadequate hay-based environments. See our best guinea pig food UK for vitamin C strategy.
- Heat stress — gasping, drooling, lying flat in summer. Move cage immediately to cooler location, offer cool tiles to lie on. Critical above 26 °C.
For more on the species, see our complete guinea pig care guide, behaviour overview, how to trim guinea pig nails, and our toxic foods list. For enrichment specifically: homemade guinea pig toys. For wider small-pet bedding: best small animal litter UK.