Armstrong Siddeley was a prestigious British manufacturer of luxury automobiles and aircraft engines operating from 1919 to 1960. Formed in Coventry through the merger of Armstrong Whitworth and Siddeley-Deasy, the company built a reputation for smooth performance, advanced engineering, and understated aristocratic design. Following World War II, many of its models were named after iconic British aircraft — including the Hurricane, Lancaster, Whitley, and Typhoon. The brand's signature hallmark was its distinctive Sphinx bonnet mascot (The Sphinx) — one of its most recognizable symbols, embodying silent and reliable engine performance.