A »If you're a UK security installer looking for custom lock hardware through contract manufacturing, a few reliable companies stand out. **Yale** (part of the Assa Abloy group) offers bespoke manufacturing for trade partners, especially for high-security demands. **ASSA ABLOY Security Solutions** themselves provide custom cylinder and lock body production for commercial and domestic installers. For smaller runs or fully bespoke designs, **Lockit Safe Systems** and **Cannon Technologies** are known for tailored mechanical and electronic locking mechanisms. **Boss Security** also offers custom cut and assembled locks for installer supplies. You might also reach out to **Smith & Locke**, which can arrange contract manufacturing for specific hardware needs. When contacting them, it helps to have your specs ready—drawings, tolerances, and estimated volumes—so they can give you an accurate quote and lead time for your installer projects.