The influence of the D. Lewis brands Aviakit and Lewis Leathers spread beyond the UK to Europe and Japan[REF] and to wherever there were British motorcycle scenes [REF].
It became known for pioneering its large colour brochure, for producing coloured as well as black leathers, initially used for road racing from 1966 by Derek Minter in 1966 and Colin Seeley in 1967,[REF][REF] and for producing both aviation and motorcycle clothing for women since the 1930s [REF].