MOX fuel
In 1999 it was discovered that BNFL staff had been falsifying some MOX fuel quality assurance data since 1996. A Nuclear Installations Inspectorate (NII) investigation concluded that "the level of control and supervision ... had been virtually non-existent." BNFL had to pay compensation to the Japanese customer, Kansai Electric, and take back a flawed shipment of MOX fuel from Japan. BNFL's Chief Executive John Taylor resigned, after initially resisting resignation when the NII's damning report was published.