Current non-executive director roles include acting as non-executive chairman of the Girls Day School Trust, chairman of the Governing Body of the School of Oriental and African Studies and chairman of Optitune, a cleantech company with R&D and manufacturing capabilities in nano-technology.
Miller was previously a non-executive director of recruitment services provider Michael Page Group. Miller is also visiting professor of business management and strategy at the Nottingham Business School and is the general secretary responsible for the London Society of Rugby Football Union Referees.