We analysed the Amazon.co.uk subcategory Knife Sharpeners and kept only products with at least 200 reviews and 4.3 stars. Ranked by estimated monthly revenue, the ten cover five different methods — rolling discs, suction pull-throughs, three-stage manuals, an electric wheel and a whetstone set — from £8 to £139.
The revenue leader at £24.99 and the cheap way into the rolling-disc method that HORL made popular — with the weakest rating here at 4.3 stars.
Check the price on AmazonThe revenue leader at £24.99 and the cheap way into the rolling-disc method that HORL made popular — with the weakest rating here at 4.3 stars.
A compact hand-held sharpener at £12.99 with 10,429 reviews, listed as suitable for serrated and outdoor blades — the price rose 44% over the observed period.
The most reviewed sharpener on the British market with 79,355 ratings, at £8 — it clamps to the worktop by suction so neither hand holds the sharpener.
The identical AnySharp in silver, listed under its own ASIN at the same £8 and sharing the same 79,355 reviews as rank 3.
The most expensive entry here at £139, and the original of the rolling method — an oak roller with a magnetic block that fixes the angle at 15 or 20 degrees.
The only mains-powered sharpener in the top ten at £49.99, running a three-stage diamond wheel system rather than pull-through slots.
The classic three-slot pull-through at £12.99 with 23,969 reviews, working through carbide plates, diamond rods and a ceramic stone in turn.
The freehand option at £23.99: four grits from 400 to 8000, which means water, patience and a steady angle rather than three pulls at the sink.
A £15.97 multi-slot sharpener that also takes scissors and pocket knives, supplied with a cut-resistant glove.
The third rolling sharpener in this list at £59.97 — priced between the £24.99 Pietuley and the £139 HORL, and down 63% over the observed period.
| Product | Score | Stars | Reviews | Feature | Material | Price | Offer |
|---|---|---|---|---|---|---|---|
| 01. Pietuley Rolling Knife Sharpener Kit Best seller Pietuley · Pietuley |
8.0 | 4.3 ★ | 1,297 | rolling · stone kit | Diamond and ceramic discs | £24.99 | Amazon › |
| 02. Diamond Edge No.1 Manual Knife Sharpener Diamond Edge · Diamond Edge |
8.7 | 4.4 ★ | 10,429 | manual · serrated | Diamond abrasive | £12.99 | Amazon › |
| 03. AnySharp Knife Sharpener, Black Top rated AnySharp · AnySharp |
9.2 | 4.5 ★ | 79,355 | suction · hands-free | Tungsten carbide | £8.00 | Amazon › |
| 04. AnySharp Knife Sharpener, Silver Top rated AnySharp · AnySharp |
9.2 | 4.5 ★ | 79,355 | suction · silver | Tungsten carbide | £8.00 | Amazon › |
| 05. HORL 2 Oak Rolling Knife Sharpener HORL · HORL |
8.7 | 4.6 ★ | 3,522 | rolling · 15° & 20° | Oak, diamond and ceramic discs | £139.00 | Amazon › |
| 06. SHARPAL 198H Electric Knife Sharpener SHARPAL · SHARPAL |
8.5 | 4.5 ★ | 2,166 | electric · 3 stage | Diamond wheels | £49.99 | Amazon › |
| 07. Lantana Smart Sharp 3-Stage Manual Sharpener Lantana · Lantana |
9.0 | 4.5 ★ | 23,969 | 3 stage · manual | Tungsten carbide and ceramic | £12.99 | Amazon › |
| 08. KEENBEST Whetstone Set, 400 to 8000 Grit KEENBEST · KEENBEST |
8.7 | 4.6 ★ | 3,524 | whetstone · 4 grits | Corundum whetstone | £23.99 | Amazon › |
| 09. longzon 6-in-1 Manual Sharpener with Glove longzon · longzon |
8.2 | 4.4 ★ | 1,664 | 6-in-1 · with glove | Tungsten carbide and ceramic | £15.97 | Amazon › |
| 10. OKNIV Pro Edition Rolling Knife Sharpener OKNIV · OKNIV |
8.0 | 4.5 ★ | 305 | rolling · diamond | Diamond and ceramic discs | £59.97 | Amazon › |
A honing rod straightens an edge that has rolled over; a sharpener grinds a new one by removing steel. Every product here removes metal, which is why you hone weekly and sharpen a few times a year — not the other way round.
European knives are usually ground around 20 degrees per side, Asian blades closer to 15. The HORL sets both explicitly; a pull-through slot decides for you, and if its angle is steeper than your knife it will grind away the existing bevel before it sharpens anything.
Tungsten carbide plates cut fast and coarse, ceramic refines, diamond sits between the two and copes with hardened steel. That is why the three-stage sharpeners here go coarse to fine, and why a single-slot carbide sharpener is a rescue tool rather than a finishing one.
Pull-through slots and rolling discs hold the angle for you; a whetstone does not. Three of these ten are rolling systems at £24.99, £59.97 and £139, and the whetstone set at £23.99 asks for a skill the others replace with a jig.
Most slot sharpeners will flatten the scallops on a bread knife. Two listings here state serrated capability outright, and hardened steel above roughly 58 HRC needs diamond rather than carbide. Check both before feeding it your most expensive knife.
The AnySharp fixes itself to the worktop by suction so you can use both hands on the knife; the rolling systems use a magnetic block; the whetstone needs a damp cloth underneath. Anything that slides while you push a blade along it is the wrong tool at any price.
For most kitchens a three-stage pull-through at around £13 restores a usable edge in a minute. A whetstone set gives a finer, longer-lasting edge and lets you set your own angle, but it needs soaking, a flat surface and practice. The two are aimed at different people, not at different budgets.
They are the same sharpener in black and in silver, each with its own ASIN and both at £8. Amazon pools the reviews across 22 variants, which is why both show 79,355. Together they account for roughly £45,000 of monthly revenue in this subcategory.
All three rolling sharpeners here work the same way: a magnetic block holds the knife at a fixed angle while a weighted disc rolls along the edge. The HORL adds an oak body, German manufacture and two defined angles. Whether that is worth £114 more than the Pietuley is a question about materials and finish, not about geometry.
The products are ordered by estimated monthly revenue per ASIN, not by star rating and not by bestseller rank. Only products with at least 200 reviews and an average of 4.3 stars were included. That is why a £139 roller selling 157 units sits alongside an £8 sharpener selling nearly 3,000.
The score is not our own hands-on test. It is calculated transparently from public Amazon data: 75% from the average star rating and 25% from the number of reviews, weighted logarithmically. The ranking order itself comes from estimated monthly revenue per ASIN. Prices, ratings and review counts were retrieved from Amazon.co.uk on 22 July 2026 and can change at any time.
Affiliate disclosure: As an Amazon Associate we earn from qualifying purchases — at no extra cost to you. All links are affiliate links. Prices are snapshots taken on 22 July 2026; the current price is shown live on Amazon. Product images and details come from Amazon or the manufacturers.