Hock Liong Liew is a Technical Director at Mott MacDonald and an accomplished geotechnical engineer with experience on major UK and international infrastructure projects. A strong advocate of the Observational Method, he applies real-time data to optimise designs, reduce carbon emissions, and improve safety—most notably on Crossrail’s Liverpool Street Station and HS2. Actively involved in ISSMGE TC206 (Observational Method in Geotechnical Engineering), he contributes to advancing global best practices and knowledge sharing