No. 1 Photographic Reconnaissance Unit (or 1 PRU) was a flying unit of the Royal Air Force, first formed in 1940.
History
On 24 September 1939, the Royal Air Force formally took over the "Heston Flight", a civilian photo reconnaissance unit headed by Sidney Cotton based at Heston Aerodrome.[4] The unit had previously been contracted by MI6 to perform clandestine photographic reconnaissance over Europe, using civilian-registered Lockheed 12A aircraft.[4] The Flight was redesignated several times, first on 1 November 1939 as No. 2 Camouflage Unit,[5] then on 17 January 1940 as the Photographic Development Unit,[5] then on 18 June 1940 the Photographic Reconnaissance Unit,[1][6] and finally on 14 November 1940, No. 1 Photographic Reconnaissance Unit.[6][7]
On 18 October 1942, 1 PRU was disbanded and the individual Flights of the Unit were redesignated as five separate squadrons, Nos. 540, 541, 542, 543 and 544 Squadrons.
On 1 June 1982, the Unit was revived at RAF Wyton[8] when No. 39 Squadron was disbanded and some of its English Electric Canberra PR.9 reconnaissance aircraft were transferred to a newly formed No. 1 Photographic Reconnaissance Unit.[9] The Unit reverted to its previous identity on 1 July 1992, when it was renumbered No. 39 (1 PRU) Squadron.[8]
Bowyer, Michael J.F. and John D.R. Rawlings. Squadron Codes, 1937-56. Cambridge, UK: Patrick Stephens Ltd., 1979. ISBN0-85059-364-6.
Flintham, Vic and Andrew Thomas. Combat Codes: A full explanation and listing of British, Commonwealth and Allied air force unit codes since 1938. Shrewsbury, Shropshire, UK: Airlife Publishing Ltd., 2003. ISBN1-84037-281-8.
Jefford, C.G. RAF Squadrons, a Comprehensive record of the Movement and Equipment of all RAF Squadrons and their Antecedents since 1912. Shrewsbury, Shropshire, UK: Airlife Publishing, 1988 (second edition 2001). ISBN1-85310-053-6.
Lake, Alan. Flying Units of the RAF: The ancestry, formation and disbandment of all flying units from 1912. Shrewsbury, Shropshire, UK: Airlife Publishing, 1999. ISBN1-84037-086-6.
Nesbit, Roy Conyers. 1996. Eyes of the RAF. Sutton Publishing ISBN0-7509-1130-1