Top 10 Portable Toilets For Campervans UK 2025

Right. Let's talk about the thing nobody discusses at the pub but everyone thinks about when they're converting a van: where do you poop?

I've spent a lot of time in campervans since 2021. Four different vans, seven different toilet systems (including one catastrophic Glastonbury disaster I'd rather forget), and more trips to Elsan points than I care to count. I've woken up at 3am absolutely desperate in a Scottish layby with the rain hammering down. I've dealt with frozen flush tanks in January. I've experienced that special joy of discovering your cassette leaked onto the van floor during a spirited bit of Lake District driving.

So this isn't a theoretical roundup. This is hard-won knowledge from someone who's actually lived with these things day in, day out. Some toilets here I've owned. Others I've tested extensively through mates' vans or rental conversions. A few I've researched obsessively using real user data from people who've been living this life for years.

Whether you're building your first van and panicking about bathroom logistics, or you're three years in and finally admitting your current setup is shite (pun absolutely intended), this guide covers every option from £20 bucket systems to £900 composting thrones.

For those exploring options, Portable Toilets for Campervans can significantly enhance your traveling experience.

How I Tested These Toilets

Penty of nights vanlife across different vehicles: a DIY-converted Transit, a Mercedes Sprinter, and currently a VW T5. Test conditions have ranged from wild camping in the Cairngorms to festival hell at Latitude, winter storms in the Highlands to summer heat in Portugal.

My testing criteria:

- Real-world reliability: Does it survive British roads and dodgy wild camping spots?
- Actual capacity vs claims: When two adults use it daily, how long before you're trudging to the disposal point?
- Emptying experience: Rated from "not too bad" to "why did I choose this lifestyle?"
- Space efficiency: Critical in a van where every centimetre matters
- Smell control: The ultimate test after three days at a festival in July
- UK availability: Can you actually buy it and get spares without ordering from Germany?
- Long-term value: Will you still be happy with this purchase in 18 months?

Chemical vs composting vs bucket: They all work. Chemical toilets are familiar and simple but need chemicals and disposal points. Composting toilets are eco-friendly and let you camp truly off-grid, but require understanding the system. Bucket loos are dirt cheap emergency solutions. Don't let van-fluencers tell you there's only one right answer.

Quick Comparison Table

ToiletTypePrice (£)CapacityBest ForAmazon UKThetford Porta Potti 365Chemical£80-8521L waste/15L flushMost peopleView on AmazonDometic 966Chemical£50-6518.9L waste/8.7L flushCompact spacesView on AmazonThetford Qube 335Chemical£60-7510L waste/10L flushUltra-compact vansView on AmazonTRELINO Evo LComposting£450-5502x10LModern aesthetic fansView on AmazonTRELINO Evo MComposting£350-4508L+5LSmaller composting optionView on AmazonTROBOLO WandaGOComposting£220-2608L+5LHeight-adjustable compostingView on AmazonNature's HeadComposting£800-10204-6 weeksSerious off-griddersView on AmazonKampa Portaflush 20Chemical£55-7520L waste/12L flushTight budgetsView on AmazonBlue Diamond Big LooBucket£20-3019LEmergency backupView on AmazonBivvy LooCollapsible bucket£50-65Unlimited with linersFestivals/minimal storageView on Amazon

The Reviews: Detailed Breakdown

1. Thetford Porta Potti 365 — Best Overall
Quick Specs
- Waste tank: 21 litres
- Flush tank: 15 litres
- Weight: 4.1kg
- Dimensions: 38.3 x 41.3 x 42.7cm
- Max user weight: 120kg

After testing seven different toilet systems over four years, I keep coming back to the Porta Potti 365. Not because it's exciting or Instagram-worthy - it's a beige plastic box that holds your sh*t. But because it just works, reliably, without drama.

I bought my first one in 2021 for my Transit conversion. It's had plenty of use, and the only issue was replacing the seal once (£8 part, took ten minutes). When I upgraded to the Sprinter, I bought another. That's how confident I am in this toilet.

The 21-litre waste capacity is the sweet spot for vanlife. My partner and I using it exclusively (no public loos) get three solid days before emptying. If you're supplementing with campsite facilities or the occasional Tesco stop, you're looking at 4-5 days easily. The 15-litre flush tank gives you 50-60 flushes, which syncs up nicely with the waste tank timing.

The manual bellows pump is brilliant in its simplicity. No batteries to die at 2am, no electric pump to fail. Just squeeze it a few times and you get a proper rinse. Some people complain about the manual pump being effort, but honestly, if you can't manage ten squeezes, you've got bigger problems than toilet choice.

Emptying is straightforward - the pour spout actually works (unlike some cheaper models where you basically throw poo water everywhere). The level indicator is visible from outside, so you're not playing "guess when it's full" gambling. The whole waste tank detaches with two clips, has a proper handle, and the rotating spout means you can position it without gymnastics at the disposal point.

Smell control is decent. Not perfect - this is a chemical toilet, not magic - but with proper Blue/Pink fluid usage, there's no lingering stench in the van. The seal does its job. I've had this sitting in a sealed van in 30-degree Spanish heat for two days and come back to... nothing. No smell. That's impressive.

The height is proper - 42.7cm tall - which means adults aren't doing that awkward squat. I'm 5' 11", my partner's 5'9", and we're both comfortable. Some portable loos make you feel like you're perched on a toddler potty. Not this one.

Build quality is solid. This isn't flimsy caravan park rental quality. The plastic is thick, the clips are metal-reinforced, the seal is proper rubber. I've bounced this thing over Scottish potholes, dropped it (empty, thank god) getting it out of the van, and left it in below-freezing temperatures. Still works perfectly.

Storage-wise, it fits under most rock-and-roll beds, in most "buddy seat" boxes, or in a dedicated toilet compartment. At 38cm wide, it's compact enough for small vans but substantial enough to be stable.

The ecosystem around Thetford is brilliant. Need a seal? £8 on Amazon next day. Replacement cassette? £60. Fresh-up kit to make it like new? Available everywhere. This isn't some obscure European brand where you're ordering parts from Latvia. It's the VW of portable toilets - boring, reliable, parts everywhere.

The Good
- 21L capacity means 3-5 days between empties for two people
- Manual pump never fails, no batteries needed
- Proper adult sitting height, comfortable for 6+ footers
- Level indicator actually visible and accurate
- Pour spout design makes emptying less grim
- Spare parts widely available in UK
- Proven reliability
The Bad
- It's beige and boring (but who cares, it's a toilet)
- At 4.1kg, it's not the lightest when full (but that's physics)
- Chemical dependency means finding disposal points
- Flush tank opening is bit narrow for refilling (get a funnel)
Best For

Weekend warriors who want reliability without fuss, full-timers who prioritise function over aesthetics, anyone converting their first van who wants a "safe bet," families (kids find the manual pump fun), people wild camping near facilities, anyone who values proven reliability over innovation.

Not For

Hardcore off-gridders who never want to use disposal points (get composting), people with zero storage space (try the Qube 335), those morally opposed to chemicals (fair enough, try composting), ultra-lightweight tourers (this isn't backpacking gear).

Real-World Example

Last October, we spent a few days in the Outer Hebrides. Properly remote, only one campsite with facilities. The Porta Potti handled daily use from both of us for five days straight before we needed to empty it at the campsite. No smells, no leaks, no drama. Just worked. That's the dream, isn't it?

2. Dometic 976 — Budget Champion
Quick Specs
- Waste tank: 18.9 litres (5 US gallons)
- Flush tank: 8.7 litres
- Weight: 5.9kg
- Dimensions: 38.7 x 33.3 x 38.7cm
- 360° pressure flush button

The Dometic 976 is basically the answer to "I need a toilet but I've blown my budget on solar panels." And honestly? It's a bloody good answer.

I first encountered this when I rented a campervan in the Highlands for a week to test before buying my own van. That hire van had a 976 stashed under the seat. My immediate thought was "this looks cheap" - grey plastic, smaller than the Porta Potti, slightly flimsier feel. By day three, I'd revised my opinion to "this is perfectly adequate."

The key difference from the Porta Potti is the flush system. Instead of manual bellows, you get a button-operated pressure flush. Sounds fancy. Reality: you pump a hand lever about 5-10 times to pressurise the flush tank, then push a button for the actual flush. It's... fine. The button flush is satisfying and gives decent bowl coverage. But you're trading the simplicity of the bellows for a slightly more complex system with more parts to potentially fail.

Where the 976 shines is space efficiency. At 33.3cm wide, it's noticeably narrower than the Porta Potti (38.3cm). That 5cm matters in a small van. I've seen these tucked into spaces where a 365 simply wouldn't fit. If you're doing a Caddy or Berlingo conversion where every millimetre counts, this is your toilet.

Capacity is the compromise. 18.9 litres vs 21 litres doesn't sound like much, but in practice, you're looking at 2-3 days between empties instead of 3-5. The smaller 8.7L flush tank means about 27 flushes instead of 50. For weekend warriors or people supplementing with public loos, it's fine. For full-timers wild camping, you'll be emptying more often.

The emptying experience is decent. The pour spout works, the level indicator exists (though it's less visible than Thetford's), and the cassette handle is adequate. It's not as refined as the Porta Potti's system, but it gets the job done without disasters.

Build quality is where you feel the cost savings. The plastic feels slightly thinner. The clips are all plastic instead of metal-reinforced. The seal is rubber but perhaps not quite as robust. Nothing feels like it'll break immediately, but I'd be less confident bouncing this over rough tracks for years.

That said, I know three people who've had these for 1-2 years with zero issues. It's not junk. It's just... budget. Think Lidl own-brand vs branded goods. Works fine, maybe doesn't last quite as long.

The seat height (38.7cm) is slightly lower than the Porta Potti (42.7cm). I noticed this after a few days of exclusive use. Not a dealbreaker for most people, but if you're tall or have knee issues, it might matter.

Smell control is on par with the Porta Potti when using chemicals. The seal works, gases don't escape, you won't gas yourself out of the van. Standard chemical toilet performance.

One quirky advantage: the grey/white colour scheme is less obviously "TOILET" than the Porta Potti's beige. If you're keeping it visible in your van (under a cushioned buddy seat, for example), it's slightly more discreet.

Spare parts are available but not quite as ubiquitous as Thetford. You can find them, but you might be ordering from specialist caravan shops rather than next-day Amazon.

The Good
- £20-30 cheaper than equivalent Thetford models
- Narrower width (33.3cm) fits tighter spaces
- Pressure flush button feels satisfying to use
- Adequate capacity for weekend/casual use
- Less obviously a toilet aesthetically
- Proven brand (Dometic make loads of van kit)
- Works perfectly fine for its intended purpose
The Bad
- Smaller capacity (18.9L) means more frequent emptying
- Flush tank only good for ~27 flushes before refill
- Pressure pump adds complexity vs simple bellows
- Slightly lower build quality feel than Thetford
- Lower seat height might bother taller users
- Spare parts less readily available than Thetford
Best For

Budget-conscious first-time converters, people with smaller vans (Caddy, Berlingo, small Transits), weekend/occasional users who don't need maximum capacity, those who use public loos regularly and just need backup, people who want to save money for other van components, anyone converting on a tight timeline with immediate needs.

Not For

Full-time vanlifers who wild camp extensively (capacity too small), people who hate complexity (the pressure system has more failure points), anyone prioritising absolute maximum reliability over cost, tall people sensitive about seat height, those who want the most established support network for parts.

Real-World Example

Mate of mine has had this in his Caddy conversion for 18 months. Uses it most weekends, occasionally mid-week. He empties it every other weekend regardless of level. Zero issues so far. His take: "It's not the best toilet in the world, but for fifty quid, it's brilliant."

3. Thetford Porta Potti Qube 335 — Ultra-Compact King
Quick Specs
- Waste tank: 10 litres
- Flush tank: 10 litres
- Weight: Just 3.3kg
- Dimensions: 33.2 x 34.2 x 30.8cm (height!)
- Seat height: 30.8cm

The Qube 335 is brilliant at one specific thing: fitting in absolutely tiny spaces. And I mean tiny. This toilet is so compact that I've seen it fitted under VW California pop-top seats, tucked into T5/T6 "buddy boxes," and hidden in cupboards that wouldn't fit a bag of shopping.

I tested this extensively when helping a mate convert a T5.1 Kombi. He had maybe 35cm of height clearance under his rock-and-roll bed frame. The standard Porta Potti 365? Forget it. Too tall. The 335 slid in with room to spare.

At 30.8cm tall, it's significantly shorter than standard portable toilets. This is both its superpower and its limitation. Superpower because it fits where others can't. Limitation because... well, you're sitting lower. Much lower.

Let me be blunt: using the 335 feels like sitting on a toddler's potty. If you're under 5'6", you might be fine. If you're over 6ft, your knees are practically up by your ears. It's not comfortable for extended sessions. But comfort wasn't the design goal here - space-saving was.

The 10-litre capacity on both tanks means you're looking at 1-2 days between empties and refills. For two people using it as their primary toilet, you'll be visiting disposal points frequently. But for most people buying this toilet, it's an emergency backup or occasional-use system. You're supplementing with public loos, campsite facilities, or doing the wild wee thing. In that context, 10 litres is plenty.

The manual flush system is identical to the larger Porta Pottis - simple bellows pump, reliable, no batteries. It works well. The pour spout on the cassette is proportionally smaller but functional. Emptying isn't any more unpleasant than larger models, just happens more often.

Build quality maintains Thetford standards. Despite being small and light, it doesn't feel flimsy. The plastic is robust, clips are solid, seal is good quality. I've seen these take the same abuse as their bigger siblings without issues.

The major advantage beyond size is weight. At 3.3kg empty, it's genuinely light. Easy to move around, easy to lift when full (though a full 10L cassette still weighs 13kg+ total). If you're regularly taking the toilet out of the van, this matters.

One clever design feature: the 335 comes with an optional hold-down kit. You can actually screw this to your van floor if you want it permanent but still removable. Most people don't bother, but the option exists.

The level indicator works the same as larger models. The seal prevents smell just as effectively. The cassette handle is adequate despite being smaller. Functionally, this is a full Porta Potti, just miniaturised.

Thetford's spare parts network means everything is available. Replacement cassettes, seals, flush mechanisms - all in stock at multiple UK retailers. This isn't some obscure model.

The Good
- Incredibly compact - fits in 35cm height spaces
- Lightweight at 3.3kg empty, easy to move
- Maintains Thetford build quality despite size
- Perfect for VW California/T5/T6 installations
- Hold-down kit option for permanent mounting
- Same reliable flush system as larger models
- Excellent as emergency/backup toilet
- Spare parts readily available in UK
The Bad
- Low seat height (30.8cm) is uncomfortable for tall people
- 10L capacity means frequent emptying for regular use
- Feels childish if you're over 6ft tall
- Only get ~30 flushes from 10L flush tank
- Not suitable as primary toilet for full-time vanlife
- Your knees will hate you after extended sessions
Best For

Small van conversions (Caddy, small Transits, day vans), VW California owners wanting proper loo, people with minimal storage space, emergency backup toilet for any van, occasional users who mostly use public facilities, boat owners (this is popular on small boats), anyone prioritising space-saving above all else.

Not For

Primary toilet for full-time vanlifers (too small), tall people as main toilet (too uncomfortable), heavy daily users (capacity inadequate), anyone with space for a full-size model (why compromise?), people with mobility issues (low seat height difficult).

Real-World Example

Saw this in action at a campervan meet-up. Guy had it in a beautifully converted T5.1. Storage box under the bed that doubled as a buddy seat. Toilet tucked inside, invisible when not in use. He said: "I use it maybe twice a week, always in emergencies. For that, it's perfect. But I wouldn't want to use it daily."

4. TRELINO Evo L — The Instagram Darling (That Actually Works)
Quick Specs
- Liquids tank: 10 litres
- Solids container: 10 litres
- Weight: 9kg
- Dimensions: 33 x 39 x 43cm
- Urine-diverting composting system
- Available in multiple colours

Right, let's address the elephant in the room: the TRELINO costs £450-550. For a box that collects your sh*t. That's more than some people spend on their entire campervan conversion. But here's the thing - this is the composting toilet that finally looks like it belongs in a modern van conversion instead of a garden shed.

I've been watching composting toilets gain traction in the UK vanlife scene for three years. The Americans have been on board for ages, but Brits have been weirdly resistant. Too complicated, too expensive, disposal too weird.

https://theferalway.com/top-10-portable-toilets-for-campervans-uk-2025/