After university Mark became the News Editor of a motorsports magazine before his interest in technology overtook racing drivers and he joined Sky TV's science and technology channel. At Sky Mark edited the consumer website, which led to a stint producing television items. He then travelled abroad and worked as a journalist for two years. Returning to Great Britain he became News Editor of publishing industry title Information World Review which he went on to edit before joining CIO in January 2008 as Online Editor. Mark became Editor in Chief in September 2010 and moved on to pursue other interests in January 2016. He remains a key member of the CIO UK team, serving as a contributing editor.