Castle Motor Co. Ltd was a British automobile manufacturer based in Kidderminster, Worcestershire, active from 1919 to 1922. Founded by brothers Stanley and Loughton Goodwin, the company emerged in the aftermath of World War I, leveraging their experience in manufacturing military components such as shells and gun carriage hubs. The Goodwins aimed to meet the growing postwar demand for affordable automobiles, opting to produce a three-wheeled…