Hylton served as Finance Director of Clemenger Group Limited since 1987. Hylton joined the advertising industry in Wellington, New Zealand in 1960 and by 1969 founded his own advertising agency, Colenso. He serves as a Director of Grant Publishing and Marketforce Limited. Hylton has been a Non-Executive Director of Clemenger Group Limited since 1976. He served as a Director of Hardie Grant Books Pty. Ltd. (formerly, Hardie Grant Publishing). In 2015, Hylton became Treasurer of the Victorian Artists Society.