In early 1936, an initial production contract for 68 Swordfish aircraft was received, as the "Swordfish I". Manufactured at Fairey's factory in Hayes, West London, the first production aircraft was completed in early 1936 and the type entered service with the Fleet Air Arm (FAA) in July 1936. By early 1940, Fairey was busy with the Swordfish and other types such as the new Fairey Albacore torpedo bomber. The Admiralty approached Blackburn Aircraft with a proposal that manufacturing activity for the Swordfish be transferred to the company, who immediately set about establishing a brand new fabrication and assembly facility in Sherburn-in-Elmet, North Yorkshire. Less than a year later, the first Blackburn-built Swordfish conducted its first flight. During 1941, the Sherburn factory assumed primary responsibility for the fuselage, along with final assembly and testing of finished aircraft.