No. 1 Photographic Reconnaissance Unit RAF
| No. 1 Photographic Reconnaissance Unit RAF | |
|---|---|
| Active | 14 Nov 1940–18 Oct 1942 1 Jun 1982–1 Jul 1992 |
| Country |
 United Kingdom
|
| Branch |
 Royal Air Force
|
| Role | aerial reconnaissance |
| Part of |
No. 16 Group RAF, Coastal Command (1940–1942) No. 1 Group RAF, Strike Command (1982–1992) |
| Insignia | |
| Squadron Codes | LY (Nov 1940–Oct 1942) |
No. 1 Photographic Reconnaissance Unit (or 1 PRU) was a flying unit of the Royal Air Force, first formed in 1940.
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. The unit had previously been contracted by MI6 to perform clandestine photographic reconnaissance over Europe, using civilian-registered Lockheed 12A aircraft. The Flight was redesignated several times, first on 1 November 1939 as No. 2 Camouflage Unit, then on 17 January 1940 as the Photographic Development Unit, then on 18 June 1940 the Photographic Reconnaissance Unit, and finally on 14 November 1940, No. 1 Photographic Reconnaissance Unit.
The unit was equipped with a variety of aircraft modified for the photographic reconnaissance role, including Supermarine Spitfires, Bristol Blenheims, Lockheed Hudsons and de Havilland Mosquitos.
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 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. The Unit reverted to its previous identity on 1 July 1992, when it was renumbered No. 39 (1 PRU) Squadron.
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