RAF Oakhanger was the home of No. 1001 Signal Unit, responsible for supporting satellite communications services for the British Armed Forces worldwide. The unit was made up of four sub-units: Space Operations, Ground Operations, Telemetry and Control, and Support; with subordinate detachments based at RAF Rudloe Manor, RAF Colerne and RAF Defford. Command and Control of the system was conducted from Oakhanger, with a planning unit based at Rudloe Manor, co-located with No. 1 Signal Unit and Controller Defence Communication Network. The Colerne and Defford detachments provided a ground anchoring capability for the communications spacecraft. The Defford detachment was managed by the Defence Evaluation and Research Agency, later QinetiQ.