| Valiant XD873 in 1962 | |
| Role | Strategic bomber or aerial refueling tanker |
|---|---|
| Manufacturer | Vickers-Armstrongs |
| Designer | George Edwards |
| First flight | 18 May 1951 |
| Introduction | 1955 |
| Retired | January 1965 |
| Status | Retired |
| Primary user | Royal Air Force |
| Produced | 1951–1957 |
| Number built | 107 |

In April 1951, an initial production order for 25 Valiant B.1 (Bomber Mark 1) aircraft was placed by the Ministry of Supply on behalf of the RAF. The timing of this order was key to establishing production quickly. Due to shortages of steel and other materials while setting up an assembly line at Brooklands, substantial portions of the production jigs for the Valiant were made from concrete. The first five Valiants produced were completed to a pre-production standard, the first being WP199. On 21 December 1953, the production aircraft conducted its first flight; this had again occurred within the schedule that Edwards had promised
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Valiants of No. 543 Squadron at RAF Wyton were modified to serve in the photographic reconnaissance role. In one notable operation in 1965, Valiants of No. 543 Squadron photographed around 400,000 square miles (1,000,000 km2) of Rhodesia across an 11-week period.
In 1956, Vickers had performed a series of low level tests in WZ383 to assess the type for low level flight at high speed.
In 1956, Vickers had performed a series of low level tests in WZ383 to assess the type for low level flight at high speed.