If you can only own one kitchen knife, it should be a chef’s knife. 20cm blade, comfortable handle, sharp enough to slice an onion cleanly without crushing it. This single knife handles vegetables, herbs, meat, fish, and the bulk of any prep that doesn’t need a specialist blade. Get the right one and most other knives in the drawer become decorative. Get the wrong one and you spend years frustrated by a tool you use ten times a day. This guide covers the picks worth your money at three honest price points — supermarket-replacement under £50, upgrade buy under £100, heirloom buy above that.
✉ Join the Dispatch — a calm weekly note, every Thursday. Free.
Prices and stock checked 1 October 2026. Every pick below was re-checked against live Amazon on this date — figures shown were correct when checked; tap through for the current price.
How we chose these knives
We compared blade length and shape around the 20cm UK standard, steel type and how long each holds an edge, handle comfort and balance in the hand, and price band — then weighted by verified UK buyer reports and how each performs as the one knife someone actually reaches for. These are researched picks, not first-hand reviews, and we don’t accept payment for placement. Read our full methodology →
What makes a good chef’s knife
Blade length and shape. 20cm (8-inch) is the UK standard and the right size for most kitchens — long enough to handle a butternut squash in one cut, short enough to feel controlled. 15cm chef’s knives exist for small kitchens or smaller hands; 25cm versions exist for professional use and serious home cooks who do a lot of bulk prep. The blade curve (called the belly) lets you rock the knife through herbs and small dice; flatter blades (santoku-style) suit a more vertical cutting motion.
Steel quality. The two broad categories are German steel (softer, easier to sharpen, more forgiving) and Japanese steel (harder, sharper out of the box, holds the edge longer but more brittle). For a single all-rounder a German chef’s knife is the safer pick; for a serious cook willing to maintain it properly, Japanese steel pays back.
Handle. Pick up the knife before you buy if you can. Comfortable handles are personal — some people love the Victorinox plastic grip, others find it cheap-feeling and prefer the heavier wooden or composite handles on Wüsthof and Zwilling. None is objectively better; what matters is whether you’ll use it for an hour without your hand cramping.
Balance. A good chef’s knife balances at the bolster (where the blade meets the handle) when you pinch it there. Tip-heavy knives feel hard to control; handle-heavy knives feel sloppy.
Tang. Full-tang construction (the steel runs the full length of the handle) is more robust than partial-tang. Almost all knives above £30 are full-tang; some cheap supermarket knives aren’t.
The picks
Some of the links below are affiliate links: if you buy through them we may earn a small commission at no extra cost to you. As an Amazon Associate I earn from qualifying purchases. We only suggest things we would recommend to a friend — see our affiliate disclosure and how we research.
Best Overall
Sabatier Professional 20cm Chef’s Knife
Correction (resolved 8 September 2026): two links on this page used to go to the wrong knife, and both are now fixed. This pick linked a Victorinox carving knife rather than a chef’s knife; the Victorinox Fibrox chef’s knife is not currently sold on Amazon UK, so the slot now holds a full-tang Sabatier at a similar price. A Tojiro pick that linked a bread knife on a six-to-seven month dispatch time has been removed altogether. Thank you to the reader who flagged it.
Made in Sheffield by Taylors Eye Witness under the Sabatier name, this is the knife that answers the question most people are actually asking: what should I buy if I do not want to spend much? The blade is full tang — one piece of taper-ground steel running the whole length of the knife into a triple-riveted handle — which is the single spec that separates a knife you keep from one you replace. It does the job of knives at four times the price, sharpens easily on any pull-through or whetstone, and leaves you the budget to buy a decent board and a honing steel, which will improve your cutting more than a pricier knife would.
Affiliate link — we may earn a small commission at no extra cost to you.
Check price on Amazon →
Best British Design
Robert Welch Signature 20cm Cook’s Knife
British-designed, made in Solihull-area facilities using German 1.4116 stainless steel. The Signature line has won multiple design awards and the handle shape is one of the most ergonomic on the market — fits the standard hand size unusually well. Sits between the budget Sabatier (price-to-performance) and the German classics (heirloom quality) in both price and feel. The knife to buy if you want something that feels considered rather than utilitarian.
Affiliate link — we may earn a small commission at no extra cost to you.
Check price on Amazon →
Best German Heirloom
Wüsthof Classic 20cm Cook’s Knife
Made in Solingen, Germany. The Wüsthof Classic is the knife you’ll see in cookery school photographs and high-end domestic kitchens. Heavier than the Sabatier, with a substantial bolster and polypropylene handle that lasts decades. Holds an edge slightly longer than the Sabatier. The right buy if you’ll use it daily for twenty years — at which point the cost-per-use is negligible.
Affiliate link — we may earn a small commission at no extra cost to you.
Check price on Amazon →
German Alternative
Zwilling Gourmet 20cm Chef’s Knife
Zwilling’s mid-range competing directly with the Wüsthof Classic. Same Solingen-made German steel, slightly different handle shape (a bit thicker, often preferred by larger hands), comparable edge retention. It is often discounted, which can make it the better value of the two; compare the cards.
Affiliate link — we may earn a small commission at no extra cost to you.
Check price on Amazon →
Best Japanese Pick
Global G-2 20cm Cook’s Knife
Global Cooks Knife 20cm, Japanese Cromova 18 Stainless Steel | G-2: Award winning chef's knife, all-purpose kitchen utensil perfect for fruits, vegetables, meat and more, hand wash only.
Global’s iconic stainless steel design — single-piece construction, hollow-handle with sand-weight balance, distinctive dimpled grip. Made in Japan, Cromova 18 steel, holds an edge dramatically longer than any German knife. Sharper out of the box, lighter to handle, but the all-steel handle is a love-it-or-hate-it thing. Buy this if you want a Japanese knife that’s still robust enough for everyday use; if you want a Japanese knife that’s truly Japanese in feel, see the Tojiro DP or the Shun Classic in our Japanese knives guide.
Affiliate link — we may earn a small commission at no extra cost to you.
Check price on Amazon →
What to skip
Anything from a TV shopping channel. The promises (“never needs sharpening!” “cuts through a tin can!”) are marketing nonsense and the knives don’t perform.
“Damascus” pattern knives under £50. Real Damascus steel is folded forged steel; cheap “Damascus” is decoration etched onto a single-piece blade. Looks pretty in photographs, performs no better than a plain stainless knife at the same price.
Sets containing 8+ knives for under £100. The individual knives are uniformly poor quality. Buy three good knives instead.
Ceramic chef’s knives. Hold an edge well but chip easily and can’t be sharpened domestically. Niche use case at best.
The block above is a J.A. Henckels International set — the value line from the company that also makes Zwilling — and the two knives laid beside it are the ones that get used, which is the point worth making about care. A set of eight ages unevenly: the cook’s knife and the paring knife are honed constantly and the rest sit sharp and untouched for months. If you are buying a block, buy it knowing that you are really buying two knives you will maintain and six you will store. It is not the Zwilling picked above, so read it as an illustration of wear rather than a verdict on that knife.
Care that doubles a chef’s knife’s lifespan
Hand-wash only. Dishwasher detergent is abrasive, dishwasher heat warps the handle, dishwasher racks chip the blade. Even Fibrox-handled Victorinox knives last longer hand-washed.
Hone weekly. Four or five strokes per side down a honing steel. Realigns the edge between sharpenings.
Cut on wood or plastic. Glass, granite, stone and ceramic chopping boards destroy edges. Wood (end-grain ideally) is best; thick polypropylene is fine.
Store properly. Block, magnetic strip, or in-drawer tray. Never loose in a drawer with other metal.
Don’t cut frozen food, bone, or pumpkin skin with a Japanese knife. The harder steel chips. Use a German knife or a cleaver for these.
Chef’s knife FAQs
What size chef’s knife should I buy — 8-inch or bigger?
A 20cm (8-inch) blade is the standard for good reason: long enough for most jobs, short enough to control. Go to 24cm only if you have big hands or cut a lot of large veg; smaller cooks often prefer the nimbleness of 20cm.
German or Japanese chef’s knife?
German knives (Wüsthof, Zwilling) are heavier and tougher — great for powering through dense veg and the odd bone. Japanese-style blades like the Global are lighter and sharper for precise work but less forgiving. Pick the feel that suits your hands and cooking.
How often should I hone versus sharpen?
Hone before or after most sessions — it realigns the edge and takes seconds. Actual sharpening, which removes metal to rebuild the edge, only needs doing a few times a year for a home cook. Honing often means sharpening rarely.
Is an expensive chef’s knife worth it?
Not necessarily. A full-tang Sabatier out-cuts many knives costing three times as much, which is why it’s our best overall. Spend more for the balance, heft and heirloom feel of a Wüsthof or Robert Welch — not because cheap means blunt.
If I only buy one knife, which should it be?
A good chef’s knife. It handles perhaps 80% of kitchen tasks — chopping, slicing, dicing — and a sharp one transforms how cooking feels. Add a bread knife and a small paring knife later; the chef’s knife earns its keep first.
Related guides
- Kitchen Knives Hub — the complete category guide
- Best Kitchen Knives UK 2026 — the all-rounder roundup
- Buying Guides — cookware, gadgets, the wider equipment guide
Sources
Steel type, hardness (HRC), blade length and handle materials are taken from manufacturer specifications and cross-checked against verified UK buyer reviews. Guidance on safe handling and storage of kitchen knives follows RoSPA kitchen-safety guidance.
🛡 Our standards: How we research · Editorial policy · Affiliate disclosure · Corrections
About Gareth
Gareth Isherwood is the editor of Danbury & Lovejoy. He has baked bread at home for 25+ years and has 15 years of growing experience across gardens, containers and other growing spaces, including an East Sussex allotment for the past three years. Read his full story →
Was this useful?
