Carl William Arntzen

Bosch Thermotechnology Ltd. manufactures and distributes domestic and residential heating boiler equipment. Its product includes gas and oil boilers, hot water cylinders, renewable technologies such as heat pumps and solar water heating systems, as well as controls and accessories.. The company was founded in 1962 and is headquartered in Worcester, the United Kingdom.

Worcester Heat Systems Ltd. used to manufacture oil and gas heating boilers. The company's products were cast iron, floor-standing, wall mounted and system boilers. It also offered solar panel hot water heating systems and under floor heating systems. Founded in 1962 by Cecil Duckworth, the company was headquartered in Warndon, UK.

Construction Products Association engages in promoting the business of construction product manufacturers and distributors. The company is headquartered in London, the United Kingdom.