Simon Malek-Jahanian

Alcumus Group Ltd. engages in provision of risk management, compliance and certification services. The firm offers risk management services, including web based information management solutions, UKAS accredited certification services, contractor verification, health and safety inspection and consultancy, training and HR consultancy. It serves to the oil and gas, retail, construction and engineering, security, manufacturing, food and drink, public sector, and transport and logistics. The company was founded in 1979 and is headquartered in Cardiff, the United Kingdom.

Arborforce Ltd. operates as an arboricultural & landscaping contractor. It offers tree works, grass cutting, and woodland mulching. The company was founded on March 20, 2002 and is headquartered in Black Bourton, the United Kingdom.

Sun Traffic Ltd. rents traffic lights. The company was founded in 1992 and is headquartered in Somerton, the United Kingdom.

Chelsey Bidco Ltd is an investment holding British company founded in 2018. The private company is based in Thame, UK. The company's main function is to hold investments.

Part of Chevron Traffic Management Ltd., Highway Barrier Solutions Ltd. designs and constructs pedestrian and vehicle restraint systems, civil engineering systems, and provides traffic management services. The company is based in Belfast, UK. The British company was founded in 2003 by Nigel Dougan. Highway Barrier Solutions was acquired by Chevron Traffic Management Ltd. from Castlehill Enterprises Ltd. on December 22, 2021.

Castlehill Enterprises Ltd. is a British company that provides a variety of services, including Vehicle Restraint Systems and Traffic Management. The private company is based in Belfast, UK. The company is able to quickly implement solutions using their own stock from depots, as well as their own in-house operatives and plant.