Bentley Motors Limited is a British manufacturer of automobiles founded on 18 January 1919 by Walter Owen Bentley (known as W.O. Bentley or just "W"). Bentley had been previously known for his range of rotary aero-engines in World War I, the most famous being the Bentley BR1 as used in later versions of the Sopwith Camel. Since 1998, the company has been owned by the Volkswagen Group of Germany. The firm is based in Crewe, England with their Central Production Facilities being based there.