Together with his long-time business partner Allan Johnston, he formed the Australian advertising agency Mojo which enjoyed much local and some international success in the 1980s and whose name survived till 2016 as Publicis Mojo, the Australian subsidiary of the French multinational advertising and communications company holding Publicis Groupe.
Together they had immediate success as a team working on campaigns for Hertz Walpole's clients Meadow Lea margarine ("You oughta be congratulated") and Tooheys beer ("How do you feel?").
During the 1980s Mojo was the hottest creative agency in Sydney and Mo and Jo had success jointly authoring World Series Cricket's "C'mon Aussie C'mon"[5] and later the Australian Tourism Commission's spot with Paul Hogan's instruction to put another "Shrimp on the barbie.
[8] The Mojo MDA Group had offices in London, New York, San Francisco, Hong Kong, Singapore and affiliates throughout Asia.
[10] The re-unification failed to set the advertising world on-fire and in 2002 the veterans accepted an offer for sale from the Japanese multinational communications group Hakuhodo.
Together with Johnston, Morris was acknowledged by his peers with admissions to the Halls of Fame of Campaign Brief (magazine) in 2006 and the Australian Writer and Art Directors Association in 2009.