[citation needed] Simon co-founded the independent Zomba Group of music companies (now a subsidiary of Sony Music Entertainment) with Clive Calder in the 1970s growing it over two decades to become the leading independent record label, music publishing company and producer management company of its era.
[2] He started Yourmobile (later renamed Moviso), the first ring tone company in the Americas, Europe, UK, Australia and Africa, in 1997.
[3] In 2001, Simon co-founded YourMobile Group with Anthony Stonefield, Hilton Rosenthal Shane Dewing and Cliff Brigden.
[4] Simon is the founder and chief executive of Mobilium Global Ltd (based in London, England, Los Angeles, Mumbai, with associate offices in Helsinki, Finland.
[6] He has also been a regular speaker and moderator in the United States and Canada, officiating since 2008 at the annual Canadian Music Week conferences and also the Milken Global Conference in Los Angeles, Musexpo in Los Angeles and Start Up in New Orleans.