UK Knife Laws

The United Kingdom enforces strict regulations concerning the sale, possession, and use of knives and bladed articles to ensure public safety. It’s essential to be aware of these laws to remain compliant and promote responsible knife ownership.

Sale and Purchase

• Age Restrictions: It is illegal to sell knives or bladed articles to individuals under the age of 18. In Scotland, individuals aged 16 to 18 may purchase cutlery and kitchen knives. 

• Prohibited Items: Certain knives are banned from sale, including:

• Flick knives (also known as switchblades)

• Gravity knives

• Zombie knives (defined by their combination of a cutting edge, serrated edge, and images or words suggesting they are used for violence)

• Butterfly knives

• Disguised knives (e.g., belt buckle or lipstick knives)

A comprehensive list of prohibited knives can be found on the UK government’s official website. 

Carrying Knives in Public

• General Rule: Carrying a knife in public without a valid reason is illegal. This applies to any article with a blade or sharp point, except for folding pocket knives with a blade not exceeding 3 inches (7.62 cm). 

• Lock Knives: Lock knives are not considered folding pocket knives and are illegal to carry in public without a valid reason. A lock knife has blades that can be locked and refolded only by pressing a button.

• Valid Reasons for Carrying a Knife: Acceptable reasons may include:

• Use at work (e.g., chef or carpenter)

• Religious purposes (e.g., Sikh kirpan)

• National costume (e.g., sgian-dubh in Scottish dress)

• Educational purposes (e.g., demonstrations or exhibitions)

It’s important to note that self-defense is not considered a valid reason for carrying a knife.

Using Knives

• Threatening with a Knife: It is illegal to use any knife in a threatening manner, including legal knives like Swiss Army knives. 

Manufacturing, Importing, and Marketing

• Marketing Restrictions: Under the Knives Act 1997, it is an offense to market a knife in a way that:

• Suggests it is suitable for combat

• Encourages violent behavior involving the use of the knife as a weapon

This includes publications and promotional materials. 

Legal Consequences

• Penalties: Violations of knife laws can result in severe penalties, including fines and imprisonment. For instance, carrying a knife unlawfully can lead to up to 4 years in prison and an unlimited fine. Using a knife to commit a crime can result in a longer prison sentence.

Recent Legislative Updates

• Offensive Weapons Act 2019: This act introduced new offenses, such as possessing certain prohibited knives in private and making it illegal to possess a corrosive substance in a public place. 

For the most current and detailed information, please refer to the official UK government resources or consult legal counsel.