It controlled the electronic Air defence radar network across Britain. It was responsible for all civilian and service personnel involved in the operation, maintenance and calibration of the Chain Home radar stations.
The group was formally established within the Directorate of Signals on 23 February 1940.[2]
By January 1945 it was still part of Fighter Command.[9] It was amalgamated with No. 26 Group RAF to become together No. 90 (Signals) Group RAF on 25 April 1946. Its last commander was Air Vice-Marshal W E Theak.[10]
History of No. 26 Group RAF
No. 26 Group RAF was formed during August 1918 in the First World War controlling units within Egypt, it was disbanded during March 1919. The group was reformed on 1 December 1937 as No. 26 (Training) Group at The Hyde, Hendon, London controlling all the Elementary and Reserve Flying Training Schools. It was redesignated to No. 50 Group RAF on 1 February 1939. It was reformed on 12 February 1940 at RAF Cranwell within RAF Training Command as No. 26 (Signals) Group RAF. It initially controlled the Wireless Schools before being expanded to control all grounds, air & marine signals equipment, direction finding and beam approach stations. It was merge with No. 60 Group and disbanded into No. 90 Group RAF on 25 April 1945.
[11]
Sturtivant, Ray; Hamlin, John (2007). Royal Air Force flying training and support units since 1912. Tonbridge, UK: Air-Britain (Historians). ISBN978-0851-3036-59.