After graduating, he worked as a brand manager for Procter & Gamble. In 1994, he joined PricewaterhouseCoopers as a management consultant, but was determined to set up his own business. Stephen launched BIBA Medical from his flat towards the end of 1998. Working in partnership with his father, he created 6 medical-publishing titles and an annual convention. The company now employs nearly 30 people in Fulham.
He was Managing Director of BIBA Medical until 2012 and remains a director of the company.