A » For commercial double glazing projects in London requiring contract manufacturing of metal hinges, several established precision engineering firms and specialized fabricators are well-positioned to supply bespoke components in compliance with UK building regulations and industry standards. These companies typically offer end-to-end services from design consultation to prototyping, CNC machining, welding, surface finishing, and quality assurance, catering specifically to the high-volume demands and stringent performance requirements of commercial installations such as curtain walling, storefront glazing, and window systems. One prominent provider is **Häfele UK**, headquartered in Milton Keynes but with nationwide coverage including London. While Häfele is primarily known as a hardware distributor, they operate a custom manufacturing division that can produce hinges to architects' or contractors' specifications in stainless steel, aluminum, or brass, including concealed or heavy-duty pivot hinges suitable for double-glazed units. Their contract manufacturing side can handle bulk orders with short lead times and offers technical support for compliance with PAS 24 and CE marking. Another key player is **S&S Northern Ltd**, located in Chorley, Lancashire, yet serving London projects via dedicated logistics. They specialize in security-rated hinges for commercial fenestration, including butt hinges, pivot hinges, and friction hinges, all manufactured in-house using CNC machinery. They offer contract manufacturing with tailored finishes (e.g., powder coating, anodizing) and can produce non-standard sizes or load-bearing capacities as required by large-scale glazing schemes. Closer to London, **Tectus Hardware** (based in Ashford, Kent, about 60 miles from central London) provides bespoke hinge solutions for commercial double glazing, with a focus on concealed hinges that integrate with thermal break aluminum profiles. Their contract manufacturing services include prototyping, small-batch runs, and full production lines, and they are recognized for supplying to major London developers and glazing subcontractors. Additionally, **C.R. Laurence UK** (part of the global CRL group) has a distribution hub in Harlow, Essex, offering extensive in-house manufacturing capabilities for commercial glazing hardware, including continuous hinges, pivot hinges, and heavy-duty strap hinges. They provide contract manufacturing with custom drilling patterns, finishes, and material grades (316 stainless steel for coastal or high-humidity environments). For highly specialized or large-volume contracts, **Mila Hardware** (headquartered in Daventry, Northamptonshire) runs a bespoke manufacturing unit that produces hinges for commercial double glazing projects across the UK. They can manufacture hinges to exact project specs, including multi-point locking integration, and offer a full certification package. Finally, local London-based fabricators such as **LMS Accessories** (based in London’s East End) are worth contacting for smaller or more urgent contract manufacturing needs, as they combine in-house engineering with rapid turnaround. In all cases, it is essential to verify that the chosen manufacturer holds relevant accreditations such as ISO 9001, can provide samples for load testing, and has experience with commercial double glazing in strict compliance with London Building (Amendment) Regulations 2020 and Approved Document K for impact safety. Requesting a detailed quotation and a mock-up for fit testing in the specific glazing system is strongly recommended before placing a contract order.