Armstrong Siddeley

Armstrong Siddeley was formed in 1919 by the merger of Siddeley-Deasy and the automotive interests of Armstrong Whitworth, bringing together John Davenport Siddeley's car business and the engineering resources of Armstrong. The company built a reputation for well-engineered, luxury and sporting cars and also became notable for aircraft engines and aero components as part of its broader engineering activities. Production of passenger cars continued through the mid-20th century, while corporate reorganisations and mergers in the postwar era saw Armstrong Siddeley absorbed into larger British engineering groups. The marque is now historic, remembered for its combination of automotive and aeronautical engineering heritage.