British Nuclear Fuels Limited (BNFL) was a nuclear energy and fuels company owned by the UK Government. It was a former manufacturer and transporter of nuclear fuel (notably MOX), ran reactors, generated and sold electricity, reprocessed and managed spent fuel (mainly at Sellafield), and decommissioned nuclear plants and other similar facilities.Until 2003 its headquarters were based at Risley, near Warrington, England.