During the Second World War the air raid warning organisation No 32 Group Carlisle Royal Observer Corps operated from a city centre building on Norfolk Road, The Laurels, although it was controlled administratively from RAF Kingstown. The association with Kingstown developed further in 1962 when the ROC ceased its aircraft spotting role for the RAF and took on a new role of plotting nuclear explosions and warning the public of approaching radioactive fallout for the UKWMO. A new administration building and a protected, hardened Nuclear Reporting bunker was built at RAF Carlisle. The nuclear bunker was a standard above-ground structure and both the bunker and Headquarters hutting stood on a separate site at Crindledyke just outside the main gates of RAF Carlisle and roughly opposite the station's officers mess. The Carlisle group was redesignated no 22 Group ROC.