The business in its present form was founded by S. Karra and Y. Sharma in 1997 as Jehan Energy Ltd to exploit oil and gas opportunities in India.
In 1999 British-Borneo Exploration merged with Hardy Oil and Gas. Charles Reimer became president. Due to the merger changes were made to the executive board - Alan Gaynor was CEO; Peter Hill became technical director and Steve Holliday was international director. Mark Adams, Will Roach, Mike Adams and Mike King were named VPs.
In 1999 Jehan Energy Ltd acquired the Indian interests of the original Hardy Oil and Gas and changed its own name in 2001 to Hardy Oil and Gas plc. (The non-Indian interests were acquired by Eni.)
Companies with headquarters and/or registered office in the UK but no applicable energy operations within the country shown in italics1Ultimate parent company is not UK-based 2Integrated in the United States, no generation or supply activities in the UK