Christiaan Hendrick de Ruyter van Steveninck

Dyon UK Ltd. is a private investment vehicle founded in 2005. The private company is based in Warwick, UK. and has subsidiaries in United Kingdom.

Discover Exploration Ltd. operates as an oil and gas exploration and production company. It has assets in Europe, Africa, and Australasia. The company was founded by Michael Henry Nolan, John Edward Craven, Frantisek Michael Josef Blaha, Paul Michael Griggs, and Alexander Mollinger in 2012 and is headquartered in London, the United Kingdom.

SHV Energy Holdings UK Ltd. operates as fuel dealers. The company is headquartered in Warwick, GB.

One-Dyas E&P Ltd. provides oil and gas exploration services. The company was founded on June 27, 2000 and is headquartered in Warwick, the United Kingdom.

Delta Hydrocarbons BV invests in field development and production enhancement of oil and gas assets. It engages in exploration and production of oil and gas reserves for oil companies. The firm offers deal structuring, field development and operations, financial and commercial management services. The company was founded by Walter van de Vijver and Maarten Reinder Scholten in 2004 and is headquartered in Utrecht, the Netherlands.

Part of Capricorn Energy Plc, Capricorn Oil & Gas Ltd. is a British company that provides oil and gas exploration services. The company is based in Edinburgh, UK.

One-Dyas BV engages in the exploration and production of oil and gas. The firm focuses primarily on developing and exploiting gas fields in the North Sea. The company is headquartered in Amsterdam, the Netherlands.

Part of ONE-Dyas BV, ONE-Dyas North Sea Ltd. explores for and extracts oil and gas. The company is based in Aberdeen, UK. The British company was founded in 2005. ONE-Dyas North Sea was acquired by Cirrus Energy Corp., a subsidiary of ONE-Dyas BV from Wilderness Energy Corp. on June 16, 2009 for $0.85 million.

Part of Pandion Energy AS, ONE-Dyas Norge AS operates as an oil and gas exploration and Norwegian production company. The company is based in Stavanger, Norway. The company was founded in 2016. The CEO is Frank Nordmo. ONE-Dyas Norge was acquired by Pandion Energy AS from ONE-Dyas BV on June 30, 2022.

Part of SHV Holdings NV, One-Dyas Exploration UK Ltd. is a company that provides oil and gas related services. One-Dyas Exploration UK Ltd. is based in Warwick, UK. Founded in 2009.