Armstrong Siddeley, a renowned British automobile manufacturer, operated from 1919 to 1960. The company was primarily involved in the production of luxury cars and aircraft engines. It was owned by the Armstrong Siddeley Motors Ltd., which was a subsidiary of the Hawker Siddeley Group. The company’s headquarters were located in the United Kingdom, and it had manufacturing facilities in Coventry and Whitley. Armstrong Siddeley was known for its high-quality vehicles and innovative engineering, making it a prominent name in the automotive industry during its existence.