Keith received his BEng in Mining Engineering (major in Underground Mining) from Imperial College, London and MSc in Civil & Structural Engineering from The University of Hong Kong. He is a Fellow of Engineers Australia, The Institution of Civil Engineers (ICE) & The Institute of Materials, Minerals and Mining (IOM3) of UK and an UK Registered Ground Engineering Adviser. He has 30 years of diverse international experience predominantly in design, construction, site supervision and project management of various major civil and underground space projects in Australia, China, Hong Kong, Middle East Regions, New Zealand, Philippines, Singapore and South Africa; in particular, of his involvement in the design/construction of 48 tunnels and underground space projects with total length of more than 280 km and total excavated volume of more than 15 Mm³. He was a committee member of the Working Group on Cavern and Tunnel Engineering, Geotechnical Division of the Hong Kong Institution of Engineers between Aug 2016 and Apr 2019.