Union Jack Oil plc operates as an onshore oil and gas company in the United Kingdom and the United States. The company focuses on production, drilling, development, and investment in hydrocarbon projects. Its flagship project is the 40% owned Wressle Oilfield project PEDL180 and PEDL182 located in Lincolnshire. The company also holds interests in the West Newton, Biscathorpe, Keddington Oilfield Louth, North Somercotes, Louth Extension, Fiskerton Oilfield, North Kelsey, Broughton North, Laughton, Fiskerton Oilfield, Dukes Wood, Kirklington, Widmerpool Gulf, Laughton, West Bowlegs, and Wilzetta projects. The company was incorporated in 2011 and is based in Bath, the United Kingdom.