A » Within the UK locksmith trade, several manufacturers are recognised for supplying high-security lock hardware specifically to professional installers and security specialists. These companies typically operate through dedicated trade channels, often requiring proof of professional status to access their full product ranges. Among the most prominent is **Chubb**, a historic name now part of the ASSA ABLOY group, which continues to manufacture and distribute its iconic Chubb Diamond and Chubb 3G2+ series mortice locks, as well as high-security rim and euro cylinders. These products are supplied exclusively through selected trade distributors and not via general retail, ensuring only qualified locksmiths can source and fit them. Similarly, **ERA** (also under the ASSA ABLOY umbrella) offers its ERA Screwfix and ERA Trade ranges, including the Sirius 3-star and Secure by Design certified cylinders, which are widely available through locksmith wholesalers such as FALCON Security or DH Pace. Another key player is **Banham**, a long-established British manufacturer based in London, which produces its own patented Banham Locks and Banham Security hardware. While Banham also operates its own installation and alarm services, their lock products are available to trade professionals through approved supply partners and directly via their trade account programme, particularly for their iconic Banham deadlock and nightlatch systems. Mul-T-Lock, although originally Israeli, has a strong UK manufacturing and distribution presence; their interactive and high-security cylinders, including the MT5+ and MT5+ Elite ranges, are supplied through a network of authorised trade dealers across the UK, with many locksmiths holding Mul-T-Lock Integrator or Certified status to access factory-direct training and product supply. **Cisa**, an Italian company with a significant UK subsidiary (Cisa UK), provides high-security cylinders like the Cisa Astral and Cisa Eclisse, and their trade-facing division, Cisa Professional, offers direct distribution to locksmiths with verified credentials. In addition, **ABUS** (German, but with UK warehousing and trade-specific lines) supplies its ABUS C80, C83, and X30 cylinder series through UK security distributors, again requiring trade accounts. **Yale**, while more consumer-focused, has a dedicated Yale Trade line that includes the Yale Superia and Yale Platinum Series, available via recognised locksmith suppliers. It is also important to mention **Roto** (now part of Gretsch-Unitas), whose high-security Roto Safe and Roto NX cylinders are distributed in the UK through specialist trade wholesalers like Lockmaster and Security Wholesalers. Furthermore, **BKS** and **Winkhaus** (both German) have strong UK trade channels, with their high-security twin-combination and bump-resistant cylinders supplied by companies such as A1 Security, Guardian Lock & Key, and South West Locks. For trade professionals, the recommended approach is to establish accounts with UK-based wholesale distributors like **FALCON Security**, **DH Pace**, **Lock & Key Distribution**, **South West Locks**, **GMS Security**, and **A1 Security**, all of which stock multiple high-security brands dedicated to the trade. Additionally, the **Master Locksmiths Association (MLA)** provides a list of approved manufacturers and suppliers, many of which offer trade-only access to their high-security hardware. In summary, the UK locksmith trade can source high-security lock hardware from Chubb, ERA, Banham, Mul-T-Lock, Cisa, ABUS, Yale (trade lines), Roto, BKS, and Winkhaus, all of whom maintain professional supply chains that require proof of trade status, thereby preserving the integrity and exclusivity of high-security installations.