John Wood Group PLC, together with its subsidiaries, provides project management, engineering, consulting, and technical services to energy and built environment worldwide.
Cairn Energy PLC operates as an independent oil and gas exploration, development, and production company.
Diversified Gas & Oil PLC operates as an independent owner and operator of producing natural gas and oil wells primarily in the Appalachian Basin of the United States.
Tullow Oil plc engages in the oil and gas exploration, development, and production activities primarily in Africa and South America.
Genel Energy plc, through its subsidiaries, engages in the oil and gas exploration and production activities.
Seplat Petroleum Development Company Plc, operates in the oil and gas exploration and production, and gas processing activities in Nigeria.
Petrofac Limited, an oilfield service company, provides services to the oil and gas production and processing industry worldwide.
Hunting PLC, together with its subsidiaries, manufactures and distributes tools and components for the upstream oil and gas industry worldwide.
Indus Gas Limited, together with its subsidiaries, operates as an oil and gas exploration and development company in Asia and Europe.
Serica Energy plc, an upstream oil and gas company, engages in the identification, acquisition, exploration, and exploitation of oil and gas reserves.
Jadestone Energy Inc., together with its subsidiaries, engages in the production, development, exploration, and appraisal of oil and gas assets in Australia, Vietnam, and the Philippines.
Gulf Keystone Petroleum Limited engages in the exploration, evaluation, and production of oil and gas properties in the Kurdistan Region of Iraq and the United Kingdom.
Pantheon Resources Plc, through its subsidiaries, engages in the exploration and production of oil and gas in the United States.
Lamprell plc, together with its subsidiaries, provides fabrication, engineering, installation, and contracting services to the offshore and onshore oil and gas, and renewable energy industries in the United Arab Emirates and Saudi Arabia.
EnQuest PLC operates as an oil and gas development and production company, explores for, extracts, and produces hydrocarbons in the United Kingdom, North Sea, and Malaysia.
Premier Oil plc, an oil and gas company, engages in the exploration, production, and development of oil and gas properties in the Falkland Islands, Indonesia, Vietnam, the United Kingdom, and internationally.
Savannah Energy PLC engages in the exploration, development, and production of crude oil and natural gas in Nigeria.
Phoenix Global Resources plc engages in oil and gas exploration, development, and production activities in Argentina.
Zoetic International Plc, a vertically integrated CBD company, researches, develops, produces, and sells cannabidiol (CBD) consumer products and other hemp derivatives in the United States and the United Kingdom.
Capital Limited, together with its subsidiaries, provides various drilling solutions to customers in the minerals industry.