Mark spent over a decade in the express courier industry running companies in both London and New York. He sold his courier business in 1998 and took his young family to live in Portugal and then France where he first ventured into the trade show and conference events industry. He founded Internet Retailing Events and Media in 2002 and sold the events side of the business to Clarion Events in 2015. He continues to run Internet Retailing Media Services Ltd with his business partners Ian Jindal and SJP Business Media.

His latest project is Mad World, a idea born out of deeply personal experiences dealing with anxiety, depression and suicidality in his own family and a desire to do something to accelerate the conversation and achieve real progress on mental health and wellbeing in the workplace.