 At the Rutherford-Appleton Laboratory a GEC 4000 system was used to control the synchrotron and injectors used for the ISIS neutron spallation source until 1998.A GEC 4080M was also used as the central processor for the radar system of the ill-fated Nimrod AEW.3 airborne early warning aircraft.CEGB also used GEC 4080 processors at three of their Grid Control Centres.