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Thetford has been manufacturing portable sanitation products since the 1960s, and the Porta Potti name is virtually synonymous with camping toilets in the UK. Yet the current range includes several models at different price points, and understanding the differences can save you money or ensure you get the features you actually need. Here is a clear breakdown of the 2026 Porta Potti lineup.
The 145 is Thetford's most compact model. It features a bellows flush, a 12-litre waste tank and a 15-litre flush-water tank. There is no tank-level indicator, so you monitor capacity by weight and usage. It is lightweight, easy to store and ideal for solo campers or couples on short weekend breaks.
The 165 retains the bellows flush but increases the waste tank to 21 litres. This makes a significant practical difference, roughly doubling the time between emptying for two people. The flush-water tank also grows to 15 litres. A tank-level indicator on the waste tank lets you know when it is time to empty.
The 345 is where the range shifts to a piston-flush mechanism. Instead of pumping a rubber bellows, you press a plunger that delivers a more powerful, consistent flush with better bowl coverage. The waste tank holds 15 litres and includes a level indicator. Many campers find the piston flush alone justifies the price premium.
This is the model most frequently recommended by experienced UK campers. The 365 combines the piston flush with a larger 21-litre waste tank and a tank-level indicator. It strikes the ideal balance between portability and capacity, handling a family of four for a long weekend without needing an empty.
At the top of the range, the 565 adds a battery-powered electric flush and a larger, more comfortable seat height. The 21-litre waste tank and level indicator carry over from the 365. The electric flush is whisper-quiet and effortless, making this model popular in motorhomes and for campers who want the closest experience to a domestic toilet.
If budget is the priority, the 145 or 165 will serve you well. If comfort and flush quality matter, start at the 345. For the best all-round experience, the 365 is hard to beat. And if you want luxury, the 565 delivers.
Whichever model you choose, consider picking up Thetford Aqua Kem Blue concentrate, a rinse fluid for the flush tank, and a pack of replacement seals. A dedicated toilet tent from Kampa or similar brand provides privacy when camping in a tent without built-in facilities.
As we move into summer 2026, Thetford remains the brand to beat in the portable toilet market. Browse the full Porta Potti range and accessories at UK Camping and Leisure and find the model that matches your camping style.
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