Mark Johnstone Walker

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.

Abbot Group Ltd. provides drilling and engineering services. The company was founded on March 17, 1959 and is headquartered in Birmingham, 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.

ASCO Group Ltd. engages in the provision of logistics services to the oil and gas sector. It offers offshore logistics, international freight management, personnel supply, and waste management services. The company was founded in 1967 and is headquartered in Aberdeen, the United Kingdom.

KCA DEUTAG Drilling Ltd. provides oil drilling and engineering services. It offers drilling rigs, rig management, rig management services, rig design and engineering services to the oil and gas industry. The company was founded in 1888 and is headquartered in Aberdeen, the United Kingdom.

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

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.

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