David Peter Fitzpatrick

Dunham-Bush Ltd. design and manufactures heating and air conditioning equipment. It offers chillers, door curtains, fan coil units, fan convertors, LST radiators, perimeter heating, radiant panels, trench heating, and unit heaters. The company is headquartered in Havant, UK.

Air Diffusion Ltd. engages in the manufacture and marketing of grilles and diffusers. Its products include ceiling diffusers, circular diffusers, circular swirls, displacement ventilations, fire blocks, floor grilles, floor swirl, louvres, and slot and step diffusers. The company was founded in 1972 and is headquartered in Shropshire, the United Kingdom.

Nuaire Ltd. designs, develops, and manufactures commercial and residential ventilation solutions. The firm specializes in energy efficient and renewable ventilation systems. It provides air handling units, twin fans, standard axial, roof fans, heat recovery solutions, and ventilation control systems. The company was founded on April 20, 1966 and is headquartered in Doncaster, the United Kingdom.

The Chartered Institution of Building Services Engineers (CIBSE) is a professional organization that promotes and advances the field of building services engineering. The non-profit company is based in London, UK, and has subsidiaries in the United Kingdom. The British company's focus is on investing in education and research, and supporting the community of built environment professionals in their pursuit of excellence. The CEO of the company is Ruth Carter.

Swegon Air Management Ltd. manufactures and distributes ventilation equipment. Its products are Actionair, Air-Diffusion, Airolution, Envirco, Trion, and NACO. The company was founded on October 22, 1962 and is headquartered in Bridgnorth, the United Kingdom.

Kingspan Light + Air (UK & Ireland) Ltd. provides ventilation and fire safety solutions. It specializes in planned preventative maintenance, emergency repairs and refurbishment packages that are staged to minimize financial impact and disruption to building users. The company was founded by Barry Tony in 1987 and is headquartered in Wentlog Avenue, the United Kingdom.