Furniture Designers & Manufacturers | OPM Furniture furniture designers, furniture manufacturer, high quality, furniture production, OPM Furniture We have been successfully designing and manufacturing furniture of the very highest quality for over 30 years. We’re constantly refining our approach to the design and production of specialist and range tables, credenzas, breakout and reception area furniture. Additional services, that include space planning and professional installation, are as highly polished as our after sales care.