Baron Oil Plc, formerly Gold Oil Plc, is a UK-based oil and gas exploration and production company focused on Latin America. Its assets include the Nancy Burdine Maxine onshore field, the Rosa Blanca and Azar Blocks in Colombia, and Block Z34 and Block XXI in Peru. Currently, the company is undertaking an assessment process, along with its partner in the project Union Oil & Gas Group, for drilling in Block Z34 which will be delayed until 2017. In 2015, Baron Oil Plc ceased to operate its Nancy Burdine Maxine field, and transferred it to state oil company Ecopetrol. The firm is in the process of shutting down its operations in Colombia. Baron Oil Plc was incorporated in 2004 and is based in London.