- Adams Rite Europe Limited
 - Manufacturer and distributor of door closing devices, exit hardware, access control products, locks, and architectural hardware. - Cotswold Architectural Products
- Makers of window hardware and locks.
- Forgeries Architectural Ironmongery
- Offers traditional window and door hardware including hinges, latches, handles, knobs, sliding bolts, hooks, and nails.
- Ize
- Manufactures door handles, fittings, architectural ironmongery, lighting, and furniture.
- KAT UK
- Markets, manufactures, and supplies PVCu patio doors, sliding sash windows, and composite doors.
- Mumford and Wood
- Manufactures traditional timber sash windows, french doors, casements, and bespoke feature windows with Georgian, Edwardian, Victorian, and gothic styles.
- Ryelund British Architectural Ironmongery
- Specialises in hand-forged period door and window furniture, including door latches, hinges, door bolts, pull handles, window stays, and bespoke ironmongery.
- Titon Hardware Limited
- Titon Hardware Limited
- Manufactures and produces window ventilators, hinges, espagnolettes, and other fittings.
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