Are Katanas Legal in the UK? The Curved-Blade Ban Explained | TOUKENZA
Are Katanas Legal in the UK? The Curved-Blade Ban Explained
Last updated: 2026-06-06
Table of Contents
If you are a UK collector asking whether a katana is legal, the honest answer is that it depends on what the sword is. The law restricts a broad category of curved swords, then carves out a specific defence that a genuine, traditionally made Japanese sword satisfies. So a cheap, mass-produced replica can be unlawful to sell, import, or even keep, while an authentic nihonto made by traditional hand methods falls within the defence. This page sets out the curved-blade rule, the wording of the traditional-manufacture defence, how the 2019 Act extended the rules to private possession, what happens at import, and the common myths. Every legal point links a primary government or statutory source so you can verify it before you buy.
The Curved Blade Ban — and Why Real Nihonto Is Exempt
, which added to the schedule of restricted weapons "a sword with a curved blade of 50 centimetres or over in length." The same provision tells you how that length is measured: it "shall be the straight line distance from the top of the handle to the tip of the blade." So the test is a straight line, not a measurement following the curve of the blade, and almost every full-length katana clears the 50-centimetre threshold and therefore falls within the restricted category as a starting point.
The reason this rule exists explains the exemption. The 2008 Order responded to a wave of cheap, mass-produced "samurai swords" turning up in violent crime. The underlying offence sits in section 141 of the Criminal Justice Act 1988, which makes it an offence to manufacture, sell, hire, offer, expose, or possess for sale, and to import, a weapon to which the section applies. The aim was to choke off the supply of disposable weapon-grade replicas, not to criminalise the serious collection of historic Japanese swords.
That is why Parliament built in a defence rather than a flat ban. The schedule, as amended, provides a defence where a person can show that "the weapon in question was made before 1954 or was made at any other time according to traditional methods of making swords by hand," set out in the Criminal Justice Act 1988 (Offensive Weapons) Order 1988 schedule. Note the wording carefully: it is not a "Japanese sword" exemption and it is not limited to Japan at all. It is a traditional-manufacture defence, and a genuine nihonto satisfies it on either of two independent branches — made before 1954, or made at any time by traditional hand methods. The law therefore treats an authentic hand-forged blade and a cheap factory reproduction in opposite ways.
What Counts as Traditional Methods
The defence has two limbs, and a genuine Japanese sword can rely on either. The first is age: a sword "made before 1954." A koto, shinto, shinshinto, or early gendaito blade made before that date qualifies on age alone. The second is method: a sword "made at any other time according to traditional methods of making swords by hand." This protects a modern shinsakuto — a blade made today by a licensed Japanese smith following the traditional forging, folding, and differential-hardening process — even though it was made long after 1954. A real nihonto therefore sits inside the defence whether it is centuries old or freshly forged, provided it was made by hand in the traditional way.
The practical question is evidence, and the burden here is evidential rather than a full reverse burden of proof: under the schedule, a person "shall be taken to have shown" the matter if "sufficient evidence of that matter is adduced to raise an issue with respect to it; and the contrary is not proved beyond a reasonable doubt." In plain terms, the collector raises the defence by pointing to credible evidence that the sword is traditionally made, and it is then for the prosecution to disprove it to the criminal standard. You are not asked to prove your case to a high bar; you are asked to be able to show your sword is the genuine article.
This is where authentication earns its place. The construction itself is the first evidence — a forged, hand-made blade with a genuine hamon and a tang signed or shaped in the traditional way looks nothing like a stamped factory replica. Beyond that, most quality nihonto carry papers from the NBTHK confirming the blade is genuine traditionally made nihonto, and many have a documented history through the Japanese registration card (登録証) system. These papers are not a licence and UK law does not name them as proof; they are the supporting evidence a collector relies on to discharge the evidential burden and show that a sword is the real thing rather than a reproduction. Our NBTHK certificate guide explains what these papers say and why they matter for exactly this reason.
Owning, Buying and Possessing After the 2019 Act
For years the section 141 offence was about supply — manufacturing, selling, hiring, importing — and simply keeping a restricted weapon at home was not itself the offence. That changed with the Offensive Weapons Act 2019, whose section 46 inserted a new possession offence into the Criminal Justice Act 1988, section 141(1A): "Any person who possesses a weapon to which this section applies in private is guilty of an offence." This came into force on 14 July 2021 in England and Wales, so the question is no longer only about buying or importing but about keeping the sword at home.
The crucial point for collectors is that the same defences were extended to the new possession offence, so the protection for a genuine nihonto did not narrow. The traditional-manufacture defence in the schedule now expressly applies to an offence "under section 141(1) or (1A)" — that is, it covers private possession, not just sale and import. The antique definition was extended the same way: the schedule provides that "a weapon is an antique if it was manufactured more than 100 years before the date of any offence alleged to have been committed" under subsection (1) or (1A), so a blade over 100 years old is exempt for possession as well. The GOV.UK statutory guidance on the Offensive Weapons Act 2019 confirms in plain English that antique weapons over 100 years old, and curved swords made before 1954 or made by traditional hand methods, are exempted from the possession offence, alongside further defences for weapons of historical importance, museums and galleries, education, and theatrical, film, and television production.
On penalties, the section 141 supply offences are tried summarily, with a maximum of six months' imprisonment or a level 5 fine, while the section 141(1A) possession offence carries its own summary penalty. Treat the precise figures as subject to change — sentencing in this area has been under active reform — and read the current statute before relying on a number. The practical takeaway is simpler than the statutory detail: keeping a genuine traditionally made or antique nihonto at home is within the defences.
Importing into the UK
Importing a restricted weapon is part of the same offence. Section 141 prohibits the importation of a weapon to which the section applies, and the related customs offences sit under section 50 of the Customs and Excise Management Act 1979. The good news for collectors is that the traditional-manufacture defence covers import as well: the schedule defence applies to conduct charged under section 141 and under "section 50(2) or (3) of the Customs and Excise Management Act 1979," so a genuine nihonto that satisfies the made-before-1954 or traditional-methods test is as defensible at the border as it is at home.
In practice import is routine for an authentic sword but rewards good paperwork. Declare the sword honestly — normally as an antique or a work of art — and have the documentation that supports the defence travelling with it, including the Japanese export papers and any NBTHK certificate and registration-card history, as described in our how to buy from Japan guide. Border Force is far more likely to wave through a clearly documented antique art sword than an undeclared parcel, and those documents are the same evidence that would raise the defence if it were ever questioned.
Import VAT is the other practical point. UK guidance allows a reduced valuation for qualifying antiques and works of art, producing an effective VAT rate of 5 percent rather than the standard rate; antiques eligible for it are those classified under tariff heading 9706, generally items more than 100 years old — in practice, paperwork showing age helps at the border — as set out in the GOV.UK guidance on valuing goods for import VAT. A blade under 100 years old will not get the antique reduced valuation and is treated under the ordinary import rules. Rates and reliefs change, so verify the current figures before you rely on a rate.
Penalties and Common Misunderstandings
The most common misunderstanding is the belief that all katanas are simply banned in the UK. They are not. The law restricts a category of curved swords and then provides a defence that a genuine traditionally made or antique Japanese sword satisfies; what the ban removes from the market is the cheap reproduction. A few further points are worth keeping straight:
Owning and displaying a genuine sword at home is within the defences after the 2019 Act, provided the blade is traditionally made, made before 1954, or over 100 years old. The replica is the piece on the wrong side of the line, not the authentic nihonto.
Carrying a blade in public is a completely separate offence. Under section 139 of the Criminal Justice Act 1988 it is an offence to have an article with a blade or point in a public place without good reason or lawful authority. Taking a sword to a martial arts class or a registered event can be a good reason, but keep it cased and be ready to explain why you have it.
The traditional-methods and pre-1954 defences are about manufacture, not country, so the test is genuine hand construction — which is precisely what authentication papers help to evidence.
This page is general information, not legal advice; the statute and guidance change, so confirm the current position before you act.
Importing and owning a genuine nihonto in the UK is legally workable for the authentic collector — the law was written to stop the replica trade, not the serious study of Japanese swords. For how other jurisdictions compare, see our sword laws by country hub, and for the buying and export process see our how to buy from Japan guide. If you would like help choosing a sword or finding a specific piece, ask through our consultation window or submit a search request.
FAQ
Are katanas illegal in the UK?
Not as a class. The Criminal Justice Act 1988 (Offensive Weapons) (Amendment) Order 2008 restricts a sword with a curved blade of 50 centimetres or over, measured in a straight line from the top of the handle to the tip, which catches most full-length katanas as a starting point. But the schedule provides a defence where the sword was made before 1954 or made at any other time according to traditional methods of making swords by hand. A genuine traditionally made nihonto satisfies that defence, while a cheap factory replica does not, so the ban falls on the reproduction rather than the authentic sword.
Can I buy a katana from Japan and import it to the UK?
Yes, if it is a genuine traditionally made or antique sword. Importing a restricted weapon is part of the section 141 offence, but the traditional-manufacture defence in the schedule applies expressly to conduct charged under section 141 and under section 50(2) or (3) of the Customs and Excise Management Act 1979, so a real nihonto is as defensible at the border as at home. Declare it honestly, normally as an antique or a work of art, with the Japanese export papers and any NBTHK certificate and registration-card history travelling with it. Verify the current rules before you commit, as this is general information, not legal advice.
Is it legal to own a katana at home in the UK?
Owning and displaying a genuine sword at home is within the defences. The Offensive Weapons Act 2019 added a possession offence at section 141(1A) of the Criminal Justice Act 1988, in force from 14 July 2021 in England and Wales, but the same defences were extended to it. The schedule defence for swords made before 1954 or by traditional hand methods now applies to an offence under section 141(1) or (1A), and a weapon over 100 years old is treated as an antique for possession too. The GOV.UK statutory guidance confirms these exemptions apply to the possession offence.
What proof do I need that my sword is traditionally made?
There is no statutory list of approved documents, and UK law does not name any paper as legal proof. The burden is evidential: under the schedule you raise the defence by adducing sufficient evidence that the sword was made before 1954 or by traditional hand methods, and the prosecution must then disprove it beyond reasonable doubt. The construction itself is the first evidence, and most quality nihonto carry NBTHK papers and often a registration-card history. These are the supporting evidence a collector relies on to discharge that evidential burden, not a licence. Our NBTHK certificate guide explains what they say.
Can I carry my sword to a martial arts class?
Carrying a blade in public is a separate offence from the curved-sword rules. Under section 139 of the Criminal Justice Act 1988 it is an offence to have an article with a blade or point in a public place without good reason or lawful authority. Taking a sword to a genuine martial arts class or a registered event can be a good reason, but you should keep the sword cased, transport it directly, and be able to explain why you have it. Do not carry a sword in public without a clear and lawful purpose.
This page is general information, not legal advice. Always confirm with the relevant authorities or a qualified professional.
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