Hawker Siddeley much larger firms. Out of this decision, came the "order" that all future contracts being offered had to include agreements to merge companies. In 1959, Folland Aircraft was acquired, followed by de Havilland Aircraft Company and Blackburn Aircraft in 1960. In 1963, the names of the constituent companies were dropped, with products being rebranded as ""Hawker Siddeley"" or ""HS"". In this period, the company developed the first operational, and, by far, the most successful VTOL jet aircraft, the Harrier family. This aircraft remained in production into the 1990s and remains in service. In 1948, Hawker Siddeley acquired a factory in
Hawker Siddeley Company. In 2006 the product line was sold to a new company to be known as "Hawker Beechcraft", owned by Onex Partners and Goldman Sachs. The Hawker Siddeley name was not used to brand aircraft until 1963. Prior to this, aircraft were produced under the name of the subsidiary company (e.g. Hawker Hurricane, Hawker Sea Hawk, Gloster Javelin, Gloster Meteor). First flight date is in parentheses. The Canadian subsidiary produced rail cars, transit vehicles and engines (aircraft and ship). Hawker Siddeley Hawker Siddeley was a group of British manufacturing companies engaged in aircraft production. Hawker Siddeley combined the legacies of