In a world of multinational conglomerates, one name in British aviation has remained independent for the past 90 years. Marshall of Cambridge has quietly grown to be one of the single largest employers in Cambridgeshire. Founded in the Edwardian era as a motor engineers, the company branched out into aviation after WWI, teaching pilots to fly, and became a major aircraft repair center during WWII. In the inter-war period it purchased the land which later became Cambridge Airport. Marshall have a repair facilty at Cambridge, and they have made components for aircraft as diverse as Comets and Concordes. This is the story of the firm's prodigious enterprise over the past century.