We compared 7 Ninja air fryers sold on Amazon UK by layout, capacity and functions — and what our research can’t tell you about how they cook.
Last updated 7 October 2026 · By the Ninja Air Fryer UK team
Disclosure: This article contains Amazon affiliate links; we may earn a commission at no extra cost to you. Ninja Air Fryer UK is an independent buying guide. We are not affiliated with, sponsored by or endorsed by SharkNinja, and no brand saw this article before publication.
If you are searching for the best Ninja air fryer UK shoppers can buy right now, the range can look confusing: single baskets, side-by-side drawers, stacked drawers, a flexible divider and a glass pod. This guide lays out what actually differs between seven current UK models, using published specifications and the product listings on Amazon UK.
New to the range? Start with our Ninja air fryer UK guide, or jump to our Dual Zone vs Double Stack vs FlexDrawer comparison if you have already decided you want two zones.
Most of the price difference between Ninja air fryers comes from layout and capacity, not from cooking technology. The six cooking functions are largely shared across the range. Pick the layout that suits your worktop and household first, then the size.
| Model | Layout | Capacity | Standout difference |
|---|---|---|---|
| Air Fryer Pro AF140UK | Single basket | 4.7L | Simplest controls, 4 functions |
| Foodi Dual Zone AF300UK | 2 drawers, side by side | 7.6L | The original dual-zone layout |
| Foodi MAX Dual Zone AF400UK | 2 drawers, side by side | 9.5L | Larger drawers than AF300UK |
| Double Stack SL300UK | 2 drawers, stacked | 7.6L | Two zones in a narrower footprint |
| Double Stack XL SL451UK | 2 drawers, stacked | 9.5L | Only model here with a built-in cooking probe |
| Foodi FlexDrawer AF500UK | 1 wide drawer + removable divider | 10.4L | Can cook one large item across the whole drawer |
| CRISPi FN101UK | Cooking pod on glass containers | 3.8L | Glass containers you can see through |
Core caveat: this is a research-based comparison. We did not cook with these units, so nothing here measures crispness, cooking speed or noise.
Most “best Ninja air fryer” lists rank models without explaining the one thing that really separates them: how the cooking space is laid out. This guide answers a narrow question — which Ninja layout and size fits which household — and does not try to rank cooking quality.
We chose seven models that are currently listed on Amazon UK with UK model codes, covering every Ninja air fryer layout. We left out multi-cookers, health grills and countertop ovens, which also air fry but are different products, and EU or US import listings, which may not suit UK sockets or warranties.
For each model we recorded the layout, total capacity, number of cooking functions and any feature unique to that model, using the Amazon UK listing title and, where available, SharkNinja’s own UK product page. We quoted the brand’s own claims rather than paraphrasing them, so you can see exactly what is being promised. Prices change too often to print, so each product links to its current listing instead.
Across the range, the cooking functions overlap heavily: most two-zone models list Max Crisp, Air Fry, Roast, Bake, Reheat and Dehydrate. The meaningful differences are physical — how many zones, how they are arranged, and how big each one is. Two models add something the others don’t: the FlexDrawer’s removable divider and the Double Stack XL’s cooking probe.
Ninja lists this model with four functions: Air Fry, Roast, Reheat and Dehydrate. In this comparison it is the simplest option, with one 4.7L basket and the fewest settings.
Suits: one or two people who mainly cook one thing at a time.
Ninja’s listing describes it as a “6-in-1” that “uses no oil”. It splits 7.6L into two 3.8L drawers that can run different times and temperatures, with Sync to finish together.
Suits: households of three or four who often cook a main and a side together.
The listing claims it can “cook 8 portions”. It uses the same layout as the AF300UK but with two 4.75L drawers, for 9.5L in total.
Suits: families of four or more, or anyone who batch cooks.
Amazon lists it as a 2-drawer air fryer with “6 cooking functions”. It gives the same total capacity as the AF300UK, but stacks the drawers vertically instead of side by side.
Suits: smaller kitchens that want two zones without losing worktop width.
SharkNinja says the probe “automatically stops cooking when it’s perfectly done” and that the unit is “30% slimmer” than the AF400. It is the only model in this comparison with a built-in digital cooking probe, and it offers 9.5L across two 4.75L drawers.
Suits: larger households who cook a lot of meat and want a slimmer unit.
The listing describes a “large 10.4L drawer” with a “removable divider”. It is the only model here that can switch between one big cooking space and two separate zones.
Suits: people who want both two-zone cooking and the option of one large cooking area.
Ninja describes it as a “space saving compact design” with removable glass containers and lids. Instead of a drawer, a cooking pod sits on top of a glass container, so you can watch food as it cooks.
Suits: small households, students and anyone short on space.
If you cook for one or two, a single basket or the CRISPi is usually enough. If you regularly cook a main and a side, a two-zone model earns its extra cost. Then pick the layout your kitchen can fit: side by side if you have width, stacked if you have height, FlexDrawer if you want one big space as well. Only pay for the Double Stack XL if the cooking probe matters to you.
A 7.6L to 9.5L two-zone model, such as the AF300UK, AF400UK or a Double Stack, suits most families of four. Pick between them by worktop space.
Not better, just shaped differently. Stacked models take less width but more height; the cooking functions are similar.
No. The AF140UK listing names four functions and does not include Max Crisp, while the two-zone models in this guide do.
Many Ninja listings describe the baskets as dishwasher safe, but check the manual for your exact model.
Sources: Amazon UK product listings and SharkNinja UK product pages. Listings checked 7 October 2026; specifications and prices may change. If you spot an error, please contact us and we will correct it.
Update log: First published October 2026.
