Duncan graduated from Leeds University with a BSc Hons in Environmental Science. Whilst playing rugby union and league throughout his post graduate years he worked as a rugby development officer before becoming head of the northern regional training divisions for both Sony and NEC. Duncan completed his PGSE in Leeds before taking his first teaching position at St Wilfrid’s in West Yorkshire, where he taught for two years, whilst also completing a teaching exchange to Canada for a Semester. He then moved to St Edward’s, Cheltenham for nine years as Head of Geography but also held the positions of 1st XV rugby coach, 1st X1 cricket coach and was Head of More House for three years.
Duncan was Head of Geography at Marlborough College Malaysia prior to becoming the Director of Digital Learning.