D.U. Manufacturing Co. Ltd was established in Clapham, London, and operated from 1914 to 1916. The company was founded by Harold E. Dew, who previously created the Dewcar before departing from that venture in February 1914. D.U. Manufacturing Co. Ltd focused on producing cyclecars, specifically the D. Ultra model, which was an advancement over its predecessor. The D. Ultra featured a more sophisticated design, incorporating a water-cooled…