Cairn Energy Plc engages in the exploration, development, and production of oil and gas properties. It operates through the following segments: Senegal, UK (United Kingdom) & Norway, International, and Other Cairn Energy Group. The Senegal segment focuses to have a government-approved exploitation plan. The UK & Norway segment includes exploration activities in the North Sea, Norwegian Sea, and Barents Sea as well as management of the group's producing assets in the UK North Sea. The International segment consists of all other regions where the firm currently holds exploration licenses such as Mexico, Ireland, Western Sahara, and the Mediterranean. The Other Cairn Energy Group segment accumulates the activities and results of the holding firm and other unallocated expenditure and net assets and liabilities. The company was founded by William Benjamin Bowring Gammell in 1980 and is headquartered in Edinburgh, the United Kingdom.