[1] Miller was born Hans Eric Müller, in Yorkshire,[2] and attended the Queen Elizabeth's Grammar School in Darlington.
As a Director, he was largely concerned with developing a number of rubber plantation companies that Harrisons and Crosfield had an interest in.
As a council member of the Rubber Growers' Association he became an early proponent of research and was in 1920 awarded an honorary Gold Medal for his efforts.
[1] He was also a sponsor of the International Rubber Regulation Committee, whose work these bodies was intended to complement.
[1] Aside from his gold medal from the Rubber Growers' Association and knighthood, he was also a Commander of the Order of Orange-Nassau.