The Villiers engine is a classic British two-stroke internal combustion engine, widely used from the early 20th century in motorcycles, scooters, lawnmowers, and small machinery. Manufactured by Villiers Engineering, these engines were renowned for their reliability, simplicity, and ease of maintenance. Although not directly related to cybersecurity, the Villiers engine is often referenced in discussions about legacy technology, vintage machinery security, and the importance of protecting older mechanical systems from modern threats. Understanding such legacy components can be crucial when assessing the security of industrial environments where old and new technologies coexist.