Master of Commerce, University Witwatersrand, Johannesburg, South Africa, 1991.
Trainee London Press Exchange, 1958-1962. Advertising manager Gallaher International, United Kingdom, 1962-1965. Accounts director Lindsay Smithers, Cape Town, South Africa, 1965-1969.
Director FCB Lindsay Smithers, Johannesburg, 1969-1975. Managing director Jonsson Advertising, 1975-1983. Lecturer Witwatersrand University, since 1985.
Partner Roger Sinclair Communications, since 1984. Managing director Brand Metrics (Pty) Ltd., since 1999. Visiting professor University Witisortisad, since 2000.
Member Institute Marketing Management, Communications Advertising Marketing Foundation, International Wine and Food Society (chair 1994-1998).
Married Stella Ellen Thorn, October 27, 1960. Children: Victoria Louise Thorn, Richard PatrickThorn.