What is UK law on knuckle dusters?

Knuckle Dusters are considered to be offensive weapons in the UK, making it illegal to possess them without lawful authority. This includes knuckle dusters that are concealed or modified to be disguised. Additionally, it is also illegal to manufacture, sell or hire knuckle dusters.

The maximum penalty for possessing an offensive weapon such as knuckle dusters is a prison sentence of up to four years.