Rockhopper Exploration plc, together with its subsidiaries, operates as an oil and gas exploration and production company primarily in the United Kingdom. It engages in the exploration, appraisal, and exploitation of its oil and gas acreage primarily in the North Falkland Basin and the Greater Mediterranean region. The company holds 95.50% working interest in the PL003a production license; 60.50% working interest in PL003b production license; 64% working interests in PL004a, PL004b, and PL004c production licenses; 100% working interest in PL005 production license; and 40% working interests in PL032 and PL033 production licenses in North Falkland Basin, as well as 100% working interests in PL010-PL016, PL025-PL029, and PL031 production licenses in South Falkland Basin. It also has 20% working interest in the A.C35.AG production license; 22.89% working interest in the Serra San Bernardo production license; and 100% working interest in the Aglavizza production license in Italy. The company was founded in 2004 and is headquartered in London, the United Kingdom.