Duncan founded Ashridge Communications in 2002 and was a Director of the company until October 2016. He has been involved in building communications businesses from a small base to £30million+ turnover over the past 30 years and has been a director and shareholder both of independent businesses and larger organisations such as Ladbrokes and Omnicom. Duncan has also held board-level responsibility for design, PR and publishing businesses, has chaired membership organisation committees and judged various awards.