A chartered accountant, Duncan has a wealth of experience both in business and charities. He is a governor at Langley School and a Trustee at Wymondham RFC.
After university, Duncan was commissioned into the Royal Regiment of Artillery in 1985 and on leaving the Army qualified as a chartered accountant in 1994. He has worked in book printing, commercial stationery, and was also deputy principal at City College Norwich. More recently Duncan was finance director for Walking with the Wounded. In between he as supported education and mental health charities as an interim senior manager
Duncan is a keen angler and has an interest in local history.