William John McKnight

Dunbar & Boardman Partnership Ltd. provides consulting and planning services for elevators, escalators and access equipment. The firm offers new construction, building maintenance units, refurbishment and modernization, maintenance management, expert witness and destination selection control services. The company was founded on February 9, 1981 and is headquartered in Fareham, the United Kingdom.

Part of TÜV SÜD AG, TUV SUD Ltd. is a British company that provides technical consultancy, research, testing, flow measurement and programme management services. The company is based in East Kilbride, UK and was founded in 2001.

Wallace Whittle Ltd. provides engineering consulting services. Its services include mechanical, electrical, public health, lighting, vertical transportation and sustainability. The company was founded in 1964 and is headquartered in Glasgow, the United Kingdom.

TÜV Product Service Ltd. provides safety testing and certification services. It supplies independent testing, certification, qualification, training and market access services to industries including aerospace, defense, medical and health, radio and telecoms, rail, trade electronics industries. The firm offers product testing, auditing and systems certification, product certification and training services. The company is headquartered in Fareham, the United Kingdom.