List of ROC Group Headquarters and UKWMO Sector controls
This is a concise list of locations for former ROC Group Headquarters and United Kingdom Warning and Monitoring Organisation sector controls. These sites received information from ROC posts via dedicated landlines. If landlines failed, clusters of posts could still pass data through VHF radio from their Master Posts to the headquarters or sector controls.
The Royal Observer Corps was a UK civil defence organization that operated from 29 October 1925 to 31 December 1995, when the civilian volunteers were stood down. The ROC headquarters staff at RAF Bentley Priory were stood down on 31 March 1996.
The ROC was mainly made up of civilian volunteers who wore RAF-style uniforms. Admin was under RAF Strike Command, and operational control was under the Home Office. Volunteers were trained and supervised by professional officers led by the Commandant Royal Observer Corps; later this role was filled by a serving RAF Air Commodore.
A map shows the former ROC Group Headquarters and UKWMO sector and group controls.
This page was last edited on 2 February 2026, at 11:52 (CET).