This section clarifies UK law on carrying a knife or any dangerous weapon in a public place. As a rule, you would need lawful authority to carry a weapon or any article with a blade (or sharp point).
OFFENSIVE WEAPON DEFINITION: The answer comes from section 1 of the Prevention of Crime Act 1953 and section 139 of the Criminal Justice Act 1988.
It defines an offensive weapon as any article made, or adapted, for the use of causing injury to a person.
The laws also apply to the 'intention' of use. That means a person having the weapon with him for use either by himself or by some other person.
Note: The definition of an offensive weapon also applies to a 'disguised' knife or bladed article.
As a rule, you need lawful authority (or a reasonable excuse) to carry an offensive weapon in a public place. If not, you would be committing an offence in the United Kingdom.
Even so, some exemptions apply to this rule (e.g. those used in the workplace). Other examples include legal weapons to carry or used as part of a national costume or for religious reasons.
Note: Did you find the answer you were searching for in this list of offensive weapons? If not, you might find it under a different category in the Police Questions and Answers section.
Answering Police Questions about Offensive Weapons in United Kingdom