Miles has been a non-executive Director of MyState Limited since February 2009 and became Chairman in October 2013. He has been a Director of Tasmanian Perpetual Trustees Limited (now TPT Wealth Ltd) since July 2006. He is the former Managing Director of ASX-listed Roberts Limited, a position he held from 1987 until 2006. He is the former Chairman of Forestry Tasmania, Hobart Water and TasWater, and former Deputy Chairman of the Van Diemen’s Land Company. Miles has served on the boards of Ruralco Holdings Ltd, Australian Pharmaceutical Industries Ltd, Wentworth Holdings Ltd, Money3 Corporation Ltd, HMA Ltd, Gibsons Ltd, and Impact Fertilisers Pty Ltd.