Crossley Motors was an English motor vehicle manufacturer based in Manchester, England. It produced approximately 19,000 cars from 1904 until 1938, 5,500 buses from 1926 until 1958, and 21,000 goods and military vehicles from 1914 to 1945.

Associated Equipment Company (AEC) was a British vehicle manufacturer that built buses, motorcoaches and trucks from 1912 until 1979. The name Associated Equipment Company was hardly ever used; instead, it traded under the AEC and ACLO brands. During World War One, AEC was the most prolific British lorry manufacturer, after building London's buses before the war.