Britain’s biggest overhaul of knife law in a decade has just taken effect, and it has almost nothing to do with the pocketknife in your drawer.
The Crime and Policing Act 2026 received Royal Assent on April 29th, giving police new powers to seize knives from private homes, creating a standalone offense for carrying a blade with intent to cause violence, and raising penalties for selling prohibited weapons.
Sentences for the new intent-to-harm offense can reach up to seven years. Age verification for online knife sales is also tightening, with sellers required to check photo ID at the point of purchase, and couriers required to check ID again at delivery.
What the Law Actually Affects
None of that touches the rule that actually governs whether an ordinary folding knife is legal to carry in England and Wales. That rule dates to 1988 and it hasn’t moved.
Under Section 139 of the Criminal Justice Act 1988, a folding knife with a non-locking blade of 7.62 centimetres (three inches) or less can be carried in public without needing to state a reason. Anything that locks open, or anything longer, requires what the law calls “good reason” – for work, for a specific outdoor activity, or for religious or ceremonial purposes.
That distinction confuses a lot of people, on both sides of the Atlantic. A three-inch blade sounds small to an American EDC carrier used to state preemption laws and a far more permissive default. In England and Wales, it’s the entire ballgame.
The new legislation is aimed at intent, at online sales, and at police powers to act before a knife causes harm. It does not touch the basic carry threshold that determines whether an everyday folding knife needs a stated reason at all.
Heinnie Haynes, a Welsh outdoor and EDC retailer that has stocked pocketknives, multi-tools and bushcraft gear since 1996, is among the UK specialists whose product pages routinely flag whether a given knife falls inside the Section 139 exemption. That distinction has become more relevant, not less, now that headlines about knife law are circulating again.
Where People Actually Get Caught Out
The most common confusion is about locking mechanisms.
UK courts have repeatedly confirmed that a folding knife which locks open in any way falls outside the three-inch exemption regardless of blade length, following the cases of Harris v DPP and R v Deegan. That catches out a lot of popular EDC designs, including many liner-lock and frame-lock knives that look identical in size to a legal slip-joint folder.
Some brands sidestep the issue by design. Standard Victorinox Swiss Army Knives use a slip-joint mechanism rather than a lock, which is part of why so many models sit comfortably inside the non-locking exemption.
Opinel’s classic folding range works differently: models from the No.6 upward use a rotating collar, known as the Virobloc, that holds the blade open, and the prevailing legal interpretation treats that collar as a locking mechanism. An Opinel No.6 or above therefore needs a stated reason to carry in public, regardless of its blade length, while Opinel’s smaller non-locking models can fall inside the exemption if the blade also meets the length limit.
Multi-tools raise the same question. A Leatherman or similar tool that combines a locking blade with pliers and other implements is judged on that blade in exactly the same way as a standalone lock knife: the mechanism and the length decide the legal status, not what else the tool does.
A Market That Sells Knives As Tools, Not Weapons
Carrying a knife for protection is never a valid “good reason” in English or Welsh law, no matter the blade’s size or locking status. GOV.UK’s published examples of good reason center on work use and specific religious or ceremonial carry; outdoor activities such as bushcraft and camping aren’t on that official list but have been accepted by courts on a case-by-case basis.
Retailers serving the UK’s EDC and bushcraft market build their ranges around that framework. Heinnie Haynes, for instance, separates its stock into clearly labelled UK-legal, non-locking folding knives and locking designs that require a stated reason, spanning its EDC range, its folding pocket knives, its Leatherman stock and its Victorinox range.
For anyone building an everyday carry kit under UK rules, the practical checklist is straightforward: check whether the blade locks, measure it if it’s near the three-inch mark, and know what your good reason is if it doesn’t clear the non-locking exemption. Trade tools, fishing knives, and blades carried for a specific outdoor activity are the kinds of justification that hold up in court; a knife carried “just in case” is not.
What Comes Next
Most of the Crime and Policing Act’s knife provisions are being phased in through 2026, with some measures already in force and others awaiting secondary legislation. None of the phased provisions touch the Section 139 carry threshold.
For everyday buyers, that leaves the practical picture largely unchanged from a year ago. A huge range of legal folding knives, multi-tools and Swiss Army Knives remain available and carriable, provided the blade doesn’t lock and doesn’t run past three inches. The politics of knife crime legislation may be moving fast. The rule that decides what’s in most people’s pockets isn’t.
