Post-WWII
With the cessation of hostilities in Europe in May 1945 some sections closed almost immediately, whilst others worked on tasks for the Control Commission in Germany. The several Army sections of CIU were incorporated in September 1946 to become the Army Photographic Interpretation Centre (UK) (APIC (UK)).
The CIU was placed under the control of the newly established Central Photographic Establishment of RAF Coastal Command which had replaced the disbanded 106 Group and the Joint Photographic Reconnaissance Committee (JPRC). In August 1947 the unit's name was changed yet again, this time to the Joint Air Photographic Intelligence Centre (UK) (JAPIC (UK)). In October 1947, APIC (UK) was renamed the Army Photographic Interpretation Unit (UK), (APIU (UK)) and, although it continued to operate within JAPIC (UK), had special responsibilities to the Director of Military Intelligence. The Officer Commanding APIU (UK) was also deputy commandant of JAPIC (UK).
In December 1953, the unit was given the title of the Joint Air Reconnaissance Intelligence Centre (United Kingdom), (JARIC (UK)). The personnel of APIU (UK) were absorbed into the establishment of the joint service unit and the Army has continued to provide a number of PIs and supporting staffs in the JARIC establishment. JARIC moved in 1957 from its base at RAF Nuneham Park, near Oxford, to RAF Brampton, where it still exists.
The Joint School of Photographic Interpretation (JSPI) at RAF Chicksands - where PIs for all 3 British services are now trained - has recently been renamed 'Medmenham Training Wing' in honour of unit's heritage with Medmenham.
In 1952, 591 Signals Unit moved to RAF Medmenham from RAF Wythall and stayed until 1955 when it moved to RAF Digby, its current location. It was during its stay at Medmenham that the unit's crest was conceived; a kingfisher watching over the river (Thames), representing the unit's watch over the integrity and security of RAF communications.
On 3 November 1958, RAF Signals Command (Motto: Aetherem Vincere - "To Conquer the Aether") was formed at Medmenham by raising No. 90 Group RAF to Command status under Air Vice Marshal Leslie Dalton-Morris. It was a relatively short-lived Command, lasting only until 1 January 1969, when it was absorbed by Strike Command and reduced to Group status. It had five Air Officers Commanding in Chief during its existence.
Read more about this topic: RAF Medmenham