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UK Knife Law Guide: What Knives Are Legal to Own and Carry in the UK?
Important Legal Disclaimer
This guide is provided for general information only and should not be treated as legal advice. UK knife laws can change, new restrictions may be introduced, and the interpretation of “good reason” or lawful possession can depend on the exact circumstances of the case. Police officers, prosecutors and courts may each assess situations differently.
We make every effort to keep this information accurate and useful, but we cannot accept responsibility for misunderstandings, outdated information, errors, omissions or the way this article is interpreted or relied upon. Before buying, carrying, importing, selling or using any knife, you should check the latest official guidance and seek professional legal advice where necessary.
Understanding UK Knife Law
UK knife law can feel confusing because the same knife may be legal in one situation and unlawful in another. A bushcraft knife, for example, may be perfectly legal to own and use on private land or for a genuine outdoor activity, but not legal to carry in a public place without a valid reason.
The easiest way to understand UK knife law is to separate knives into three broad groups:
- Knives and weapons that are banned and generally illegal to possess, sell, import, lend or give away.
- Knives that are legal to own but cannot usually be carried in public without a good reason.
- Folding pocketknives that meet the UK legal carry requirements and may be carried without needing a specific reason, subject to common sense and location rules.
This distinction matters. Asking “is this knife legal?” is not always enough. The better questions are: “Is this knife legal to own?” and “Is this knife legal to carry in public?”
Quick Summary: UK Knife Law at a Glance
In general terms, UK law allows a person to carry a folding pocketknife in public without a specific reason only if the cutting edge is no longer than 3 inches and the blade does not lock open.
Both conditions must apply. A small locking knife is not a UK legal everyday carry knife. A non-locking folding knife with a cutting edge over 3 inches is also outside the normal carry exemption.
Other knives, including fixed blade knives, locking folding knives, bushcraft knives, survival knives, machetes, billhooks and many multi-tools, may be legal to own, but carrying them in public normally requires a good reason.
Banned weapons are different. If an item is on the prohibited list, it may be illegal to possess it at all, even in private.
Knives and Weapons That Are Banned in the UK
Certain knives and bladed weapons are prohibited. This means they are not simply restricted for public carry; they may be illegal to possess, sell, hire, import, lend or give to another person.
The banned list includes, but is not limited to:
Flick Knives, Gravity Knives and Automatic Knives
These are knives where the blade opens automatically, or can be released from the handle by a button, spring, gravity or another mechanism. They are commonly referred to as switchblades or automatic knives.
Butterfly Knives or Balisongs
A butterfly knife has a blade enclosed by a handle that splits into two parts. The handles rotate around the blade to open or close it. These are prohibited weapons under UK law.
Disguised Knives
A disguised knife is a blade hidden inside an object that looks like something else. Examples can include knives concealed in belt buckles, combs, brushes, pens, cigarette lighters, keys, lipstick-style objects or phones.
Push Daggers
A push dagger is designed so the handle fits inside a clenched fist, with the blade projecting from between the fingers. These are prohibited.
Zombie Knives and Zombie-Style Knives or Machetes
Zombie knives and zombie-style machetes are restricted because they are associated with intimidation, violence or aggressive appearance rather than genuine practical use. Current rules include specific descriptions relating to length, blade features, serrations, spikes, multiple points, holes in the blade and violent wording or imagery.
Ninja Swords
Ninja swords are now listed among prohibited weapons. In broad terms, this refers to certain straight-bladed swords within a specified size range, with defined blade and point characteristics.
Certain Curved Swords
Some curved swords with blades of 50cm or more are prohibited, although exemptions may apply in specific circumstances, such as antiques, traditionally made swords, religious use, martial arts or historical re-enactment. Do not assume an exemption applies without checking carefully.
Swordsticks and Stealth Knives
Swordsticks, where a blade is concealed within a walking stick or cane, are prohibited. Stealth knives made from materials not readily detectable by metal detectors may also be banned where they are not intended for ordinary domestic, food or toy use.
Important Point About Banned Knives
A “good reason” does not generally make it lawful to own a prohibited knife or weapon. Good reason is relevant to many legal-to-own knives when carried in public, but it is not a general defence for possessing banned items.
If there is any doubt about whether a knife falls into a prohibited category, do not buy it, import it or keep it unless you have checked the current law and obtained proper legal advice.
Knives You Can Own But Not Usually Carry in Public Without Good Reason
Many practical knives are legal to own in the UK. This includes many tools used for bushcraft, camping, outdoor education, gardening, farming, fishing, woodland work, food preparation and craft.
However, owning a knife and carrying it in a public place are not the same thing.
The following are commonly legal to own but usually require a good reason for public carry:
- Fixed blade knives of any length
- Bushcraft knives
- Survival knives
- Wood carving knives
- Locking folding knives
- Folding knives with a cutting edge over 3 inches
- Machetes and billhooks with genuine practical use
- Multi-tools with locking blades
- Work knives and trade knives
- Hunting, fishing and outdoor activity knives
A fixed blade knife does not become legal to carry without reason simply because it is small. A locking folder does not become UK legal carry simply because the blade is short. The locking mechanism itself takes it outside the normal folding pocketknife exemption.
What Counts as a “Good Reason” for Carrying a Knife?
The phrase “good reason” is one of the most important parts of UK knife law, but it is also one of the areas where misunderstandings happen.
Examples of good reasons may include:
- Carrying a knife needed for your work
- Taking a work knife to or from a place of work
- Carrying a knife for religious reasons, such as a kirpan
- Carrying an item as part of a national costume
- Taking a knife to be sharpened, repaired or professionally serviced
- Transporting a newly purchased knife home
- Taking suitable tools directly to or from a genuine outdoor activity where they are needed
For bushcraft, camping, forest school, fishing, farming, conservation work or outdoor education, context is extremely important. A fixed blade knife packed safely with your outdoor kit, carried directly to a permission-based woodland session, is very different from the same knife being carried in a pocket on a night out.
Even then, the final decision may not be yours. If challenged, your explanation could be assessed by the police and, ultimately, by a court.
A good approach is to ask yourself:
- Do I genuinely need this knife for the activity?
- Is it suitable and proportionate for that activity?
- Am I travelling directly to or from where it will be used?
- Is it packed safely and responsibly?
- Could I clearly explain why I have it?
If the answer is unclear, leave it at home.
UK Legal Carry Knives: What Can Be Carried Without a Specific Reason?
A UK legal everyday carry knife is generally a folding pocketknife that meets both of the following requirements:
- The cutting edge is no longer than 3 inches.
- The blade does not lock open.
These are often described as UK legal carry knives, UK friendly carry knives or UK EDC knives.
Common examples may include:
- Traditional non-locking penknives
- Many Swiss Army-style knives
- Slip joint folding knives
- Compact non-locking pocket tools
- Some specially designed UK legal multi-tools
The knife must fold, must not lock, and must stay within the cutting-edge limit. Appearance alone is not enough. Some very small knives lock open and therefore do not qualify. Some traditional-looking knives may have a blade that is too long.
What Is a Lock Knife?
A lock knife is a folding knife where the blade locks into place when opened. To close it, the user must release a catch, button, liner, frame lock, back lock, collar or other locking mechanism.
Under UK knife law, a lock knife is not treated the same as a simple non-locking folding pocketknife for everyday public carry. It may be legal to own, but it normally requires a good reason to carry in public.
This is a common trap for buyers. A compact locking knife may look harmless, practical and pocket-sized, but the locking mechanism still matters.
Are Fixed Blade Knives Legal in the UK?
Fixed blade knives are legal to own in the UK, provided they are not prohibited weapons. This includes many bushcraft knives, carving knives, camp knives, food preparation knives and outdoor working tools.
However, carrying a fixed blade knife in public requires a good reason. There is no automatic carry exemption for a fixed blade knife based on blade length.
A small fixed blade neck knife, a carving knife, a large camp knife and a traditional bushcraft knife all fall into the same broad principle: legal ownership may be fine, but public carry must be justified.
For outdoor use, keep the knife packed safely with the rest of your kit, carry it only when genuinely needed, and avoid unnecessary stops or casual carry.
Are Locking Pocket Knives Legal in the UK?
Locking pocket knives are generally legal to own, unless they fall into another prohibited category. They can be useful tools for work, camping, fishing, farming, gardening and outdoor tasks.
However, a locking pocket knife is not normally legal to carry in public without good reason.
This applies even if the blade is under 3 inches. The issue is not just blade length; the locking action matters too.
Are Swiss Army Knives Legal in the UK?
Many Swiss Army-style knives are legal to carry in the UK without a specific reason because they usually have non-locking folding blades with cutting edges within the 3 inch limit.
However, not every model is the same. Some multi-tools or larger pocket tools may include locking blades, saws, longer blades or other features that change how they should be treated.
Before carrying one, check the specific model. Confirm that the blade does not lock and that the cutting edge is within the legal limit.
Are Multi-Tools Legal to Carry in the UK?
Multi-tools are legal to own, but many are not UK legal carry items because they often include a locking blade or a blade over the normal carry limit.
A multi-tool with a locking blade normally requires a good reason for public carry. That may be straightforward for a tradesperson, maintenance worker, farmer, outdoor instructor or event technician while travelling to and from work, but it is not the same as carrying it casually “just in case”.
Some multi-tools are designed specifically for UK-friendly carry, using a non-locking blade within the legal cutting-edge limit. Always check the specifications before carrying one.
Are Opinel Knives Legal in the UK?
Opinel knives need to be considered model by model.
Many classic Opinel folding knives use the Virobloc collar, which can hold the blade open. Where a mechanism prevents the blade from closing freely, it may be treated as a locking knife for UK carry purposes.
This means many larger Opinel models are legal to own but should not be carried in public without good reason.
Smaller non-locking Opinel models may be suitable for UK legal carry if the blade is non-locking and the cutting edge is within the legal limit. Always check the exact model before relying on it as a pocket carry knife.
Where You Should Not Carry a Knife
Even if a knife meets the general UK legal carry requirements, that does not mean it is suitable or acceptable everywhere.
Extra restrictions or security rules may apply at:
- Schools and colleges
- Courts and government buildings
- Airports and ports
- Music venues and sports stadiums
- Licensed premises
- Private events
- Workplaces with their own safety policies
- Public transport hubs with enhanced security checks
Private venues may refuse entry or confiscate items under their own terms. Airports and secure sites have their own rules. Schools are especially sensitive environments.
Use common sense. If you would not expect someone else to be carrying a knife in that setting, do not take one there.
UK Knife Delivery and Age Verification Rules
Knife sales and deliveries are age restricted. Retailers must not sell most knives to anyone under 18, and sellers need to take proper steps to prevent knives and bladed products being delivered to underage recipients.
For online knife purchases, customers should expect age checks. Deliveries may require proof of age at the door, and parcels containing age-restricted bladed products may need to be clearly marked and handed to an adult.
Knife parcels should not be left unattended or delivered in a way that avoids age verification. Delivery to lockers is also restricted for relevant bladed products because age cannot be checked properly at collection.
Further rules and stronger checks have been introduced or proposed through recent legislation, including more robust age and identity verification. Because this area changes, both customers and retailers should check the latest requirements before ordering, selling or dispatching knives.
Legal to Own vs Legal to Carry: Simple Examples
Example 1: Bushcraft Knife
A fixed blade bushcraft knife may be legal to own and use on private land or during a genuine outdoor activity. Carrying it through a town centre with no clear reason would be a different matter.
Example 2: Locking Folding Knife
A locking folding knife may be legal to own and useful for work or outdoor tasks. It is not normally a UK legal everyday carry knife because the blade locks open.
Example 3: Non-Locking Pocketknife Under 3 Inches
A folding, non-locking pocketknife with a cutting edge no longer than 3 inches may be carried in public without a specific reason, subject to restricted locations, sensible behaviour and context.
Example 4: Multi-Tool With a Locking Blade
A multi-tool with a locking blade is usually legal to own, but public carry normally requires a good reason, such as work or a genuine activity where the tool is needed.
Common UK Knife Law Myths
“All knives are illegal in the UK.”
False. Many knives are legal to own, and some folding pocketknives can be carried without a specific reason if they meet the legal requirements.
“If the blade is under 3 inches, it is always legal to carry.”
False. The blade must also be non-locking and folding. A small locking knife does not qualify for general everyday carry.
“Lock knives are illegal to own.”
False. Lock knives are generally legal to own unless they fall into a banned category. The issue is carrying them in public without good reason.
“A good reason lets me carry any knife.”
False. A good reason may apply to legal-to-own knives. It does not generally make possession of a banned weapon lawful.
“Multi-tools are always UK legal carry.”
False. Many multi-tools have locking blades. Check the model carefully.
“Bushcraft means I can carry a fixed blade anywhere.”
False. Bushcraft may provide a reason in the right setting, but it does not justify casual carry away from the activity.
How to Choose a UK Legal Carry Knife
When choosing a UK legal everyday carry knife, check the specification carefully rather than relying on how the knife looks.
Look for:
- Folding blade
- Non-locking mechanism
- Cutting edge no longer than 3 inches
- Clear product description
- Practical, non-aggressive design
- Trusted retailer information
Slip joint knives are popular because they do not lock open. Many traditional pocketknives, compact camp tools and Swiss Army-style knives fall into this category.
For bushcraft and outdoor use, you may also want a fixed blade or locking knife for safer controlled cutting tasks, but these should be treated as activity-specific tools rather than casual public carry items.
Responsible Knife Ownership
Responsible knife ownership is about more than simply knowing the law. It is about using the right tool in the right place, carrying it only when appropriate, and storing it safely when not in use.
A responsible knife owner should:
- Know whether a knife is legal to own
- Know whether it is legal to carry
- Understand the difference between home use, private land and public carry
- Keep knives secure during transport
- Avoid carrying knives casually without need
- Never use a knife in a threatening way
- Check current law before buying or importing
- Keep knives away from children and unauthorised users
For bushcraft, camping, woodland work, forest school, conservation and outdoor education, knives can be essential tools. Used properly, they support safe cutting, carving, food preparation, rope work, firewood processing and practical outdoor skills. Used carelessly or carried without thought, they can create serious legal problems.
Frequently Asked Questions About UK Knife Law
What knife can I legally carry in the UK?
In ordinary public places, the usual legal carry option is a folding pocketknife with a cutting edge no longer than 3 inches, provided the blade does not lock open. Restricted locations and venue rules may still apply.
Can I carry a fixed blade knife for camping?
You may have a good reason to carry a fixed blade knife when travelling directly to or from a genuine camping, bushcraft or outdoor activity where the knife is needed. However, the circumstances matter and a court may ultimately decide whether your reason is good enough.
Can I carry a locking knife for work?
A locking knife may be carried for work if it is genuinely needed for your job and the circumstances support that reason. It should be carried responsibly and only when necessary.
Are machetes legal in the UK?
Some machetes are legal practical tools, especially for gardening, agriculture, woodland work and vegetation clearance. However, machetes are not casual carry items, and zombie-style machetes or other prohibited designs may be illegal to possess. Always check the exact design and current law.
Are butterfly knives legal in the UK?
No. Butterfly knives are prohibited weapons. They are not treated as ordinary pocketknives.
Are zombie knives legal in the UK?
No. Zombie knives and zombie-style knives or machetes are prohibited under current UK law.
Can under-18s buy knives in the UK?
Retailers must not sell most knives to anyone under 18. There are limited differences and exceptions for certain domestic items in some parts of the UK, but knife sales are generally treated as age restricted.
Can I order a knife online in the UK?
Adults can buy legal knives online from responsible retailers, but age verification and delivery controls apply. Expect proof-of-age checks and tracked, age-restricted delivery.
Final Advice
UK knife law is not only about the knife itself. It is about the type of knife, the way it opens, whether it locks, the blade length, where it is carried, why it is being carried, how it is transported and whether the item appears on the banned list.
For everyday pocket carry, choose a non-locking folding knife with a cutting edge no longer than 3 inches. For bushcraft, survival, camping and outdoor work, use the right tool for the job, but carry it only when you have a clear and genuine reason.
Laws can and do change. Before relying on any article, including this one, check the latest official guidance and seek legal advice if you are unsure.
For more detailed information on UK knife laws please visit the links below
The Criminal Justice Act (Amendment)
The Criminal Justice Act (1988)
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