In the UK, the laws regarding decorative swords are quite specific, and it is essential to understand the regulations to ensure compliance. Here are some key points to consider:

1. Definition of a Sword: Under UK law, a sword is generally defined as a blade longer than 50 centimeters (19.7 inches) and designed for use as a weapon.
2. Offensive Weapons Act 2019: The Offensive Weapons Act 2019 in the UK introduced stricter regulations on bladed weapons, including decorative swords. It prohibits the possession, sale, and importation of certain types of bladed items, including "swordsticks" and "zombie knives."
3. Exemptions: While the law restricts certain types of bladed items, there are exemptions for certain types of decorative swords. For example, decorative swords with blunt blades, swords made solely for ceremonial or historical purposes, and swords made using traditional methods are generally allowed.
4. Age Restrictions: It is important to note that some decorative swords may be subject to age restrictions. Retailers may have policies requiring buyers to be over a certain age, typically 18 years old, to purchase a decorative sword.
5. Display and Storage: If you own a decorative sword, it is important to ensure it is securely displayed or stored to prevent unauthorized access, particularly if there are concerns about its accessibility to children or potential misuse.

To ensure compliance with UK laws, it is recommended to consult the specific regulations, seek legal advice if necessary, and purchase decorative swords from reputable retailers who understand and adhere to the applicable laws. Additionally, it is important to be aware of any local or regional regulations that may impose further restrictions or requirements regarding the possession or display of decorative swords.