The Proctor was an important component of the RAF's wartime communications and radio training needs. This low-wing, fixed-tailwheel light aircraft served in large numbers, having been selected against a tender specification, although it was itself developed from the Vega Gull racing aeroplane. The Mk I was produced for communications. Subsequent versions were for radio training, and the Proctor Mk IV featured a larger four-seat cabin, and in some cases dual controls. More than 1200 Proctors were produced, many during wartime by F. Hills and Sons of Manchester. Some continued in service with the RAF until 1955. After the war successful civilian conversions led to new production of 150 Proctor 5 series new civil builds.