Mark Johnstone Walker

Part of ASCO Group Ltd., Asco UK Ltd. provides oil and gas field services. The company is based in Aberdeen, UK.

Part of ASCO Group Ltd., ASCO Holdings Ltd. functions as an investment holding British company. The company is based in Dyce, UK.

Part of ASCO Group Ltd., Asco Properties Ltd. provides property management services. The company is based in Dyce, UK.

Part of Lloyds Banking Group Plc, Asco Marine Ltd. is a British company that provides marine support services. The company is based in Aberdeen, UK. Asco Marine was founded in 2007.

Part of TWMA Group Ltd., Total Waste Management International Ltd. is a British company that provides environmental, waste management and disposal services. The company is based in Aberdeen, UK and was founded in 2019.

Part of TWMA Group Ltd., TWMA Middle East Ltd. is a British company that provides environmental, drilling waste management, and disposal services to the oil and gas industry. The company is based in Bridge of Don, UK. Founded in 1979, TWMA Middle East focuses on helping the oil and gas industry manage and dispose of their drilling waste in an environmentally friendly manner.

Enviroco Ltd. engages in the provision of business support service. The company was founded on November 4, 1997 and is headquartered in Dyce, the United Kingdom.

KCA DEUTAG Drilling Group Ltd. operates as a holding company with interest in drilling and related well and facilities engineering services. It offers jack-up drilling rigs, self-erect tenders, offshore platform rigs, onshore drilling, rig refurbishment, procurement, and construction management. The company was founded in 1957 and is headquartered in Portlethen, the United Kingdom.

KPMG LLP engages in the provision of audit, tax, and advisory services. It serves the banking and capital markets, building, construction and real estate, consumer and retail, energy, natural resources and chemicals, financial services, government and public sector, healthcare and life sciences, industrial manufacturing, insurance, media and entertainment, private equity, technology, telecommunications, and venture capital industries. The company was founded in 1987 and is headquartered in New York, NY.